Describe the bug
A clear and concise description of what the bug is.

When starting the plugin, there are numerous messages like this:
[WARNING] NVD API request failures are occurring; retrying request for the 5 time

It does appear to download some updates, but there are many failures and it eventually crashes with the following stack trace.

[ERROR] Error updating the NVD Data
org.owasp.dependencycheck.data.update.exception.UpdateException: Error updating the NVD Data
at org.owasp.dependencycheck.data.update.NvdApiDataSource.processApi (NvdApiDataSource.java:392)
at org.owasp.dependencycheck.data.update.NvdApiDataSource.update (NvdApiDataSource.java:116)
at org.owasp.dependencycheck.Engine.doUpdates (Engine.java:906)
at org.owasp.dependencycheck.Engine.initializeAndUpdateDatabase (Engine.java:711)
at org.owasp.dependencycheck.Engine.analyzeDependencies (Engine.java:637)
at org.owasp.dependencycheck.maven.BaseDependencyCheckMojo.runCheck (BaseDependencyCheckMojo.java:1967)
at org.owasp.dependencycheck.maven.BaseDependencyCheckMojo.execute (BaseDependencyCheckMojo.java:1150)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:137)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:210)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:156)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:148)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:56)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
at org.apache.maven.cli.MavenCli.execute (MavenCli.java:957)
at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:289)
at org.apache.maven.cli.MavenCli.main (MavenCli.java:193)
at jdk.internal.reflect.DirectMethodHandleAccessor.invoke (DirectMethodHandleAccessor.java:103)
at java.lang.reflect.Method.invoke (Method.java:580)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406)
at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347)
Caused by: io.github.jeremylong.openvulnerability.client.nvd.NvdApiException: NVD Returned Status Code: 503
at io.github.jeremylong.openvulnerability.client.nvd.NvdCveClient._next (NvdCveClient.java:412)
at io.github.jeremylong.openvulnerability.client.nvd.NvdCveClient.next (NvdCveClient.java:331)
at org.owasp.dependencycheck.data.update.NvdApiDataSource.processApi (NvdApiDataSource.java:352)
at org.owasp.dependencycheck.data.update.NvdApiDataSource.update (NvdApiDataSource.java:116)
at org.owasp.dependencycheck.Engine.doUpdates (Engine.java:906)
at org.owasp.dependencycheck.Engine.initializeAndUpdateDatabase (Engine.java:711)
at org.owasp.dependencycheck.Engine.analyzeDependencies (Engine.java:637)
at org.owasp.dependencycheck.maven.BaseDependencyCheckMojo.runCheck (BaseDependencyCheckMojo.java:1967)
at org.owasp.dependencycheck.maven.BaseDependencyCheckMojo.execute (BaseDependencyCheckMojo.java:1150)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:137)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:210)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:156)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:148)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:56)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
at org.apache.maven.cli.MavenCli.execute (MavenCli.java:957)
at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:289)
at org.apache.maven.cli.MavenCli.main (MavenCli.java:193)
at jdk.internal.reflect.DirectMethodHandleAccessor.invoke (DirectMethodHandleAccessor.java:103)
at java.lang.reflect.Method.invoke (Method.java:580)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406)
at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347)

Version of dependency-check used

Maven plugin version: 11.1.0

Additional context

I noticed that NIST has recently changed their API. Perhaps this has broken the dependency checker?