also:
- refactor PropertyUtilsTest - it is not Mojo test, move use cases from advanced amd enhanced examples

- CopyResourcesMojoTest - test copy-resources instead of resources goal, add more tests for filtered and not filtered resources

it finishes migration

also:
- refactor MavenProjectResourcesStub - remove not needed additional stubs and not used methods

- remove not used test resources

Try to reproduce reported issue #444
As we don't have an IT with includes and filtering add one

Bumps `mavenVersion` from 3.9.11 to 3.9.12.

Updates `org.apache.maven:maven-plugin-api` from 3.9.11 to 3.9.12
- [Release notes](https://github.com/apache/maven/releases)
- [Commits](apache/maven@maven-3.9.11...maven-3.9.12)

Updates `org.apache.maven:maven-core` from 3.9.11 to 3.9.12

Updates `org.apache.maven:maven-model` from 3.9.11 to 3.9.12

---
updated-dependencies:
- dependency-name: org.apache.maven:maven-plugin-api
  dependency-version: 3.9.12
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.apache.maven:maven-core
  dependency-version: 3.9.12
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.apache.maven:maven-model
  dependency-version: 3.9.12
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Bumps org.apache.maven.plugin-testing:maven-plugin-testing-harness from 3.4.0 to 3.5.0.

---
updated-dependencies:
- dependency-name: org.apache.maven.plugin-testing:maven-plugin-testing-harness
  dependency-version: 3.5.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Bumps [org.apache.maven.plugins:maven-plugins](https://github.com/apache/maven-parent) from 45 to 47.
- [Release notes](https://github.com/apache/maven-parent/releases)
- [Commits](https://github.com/apache/maven-parent/commits)

---
updated-dependencies:
- dependency-name: org.apache.maven.plugins:maven-plugins
  dependency-version: '47'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Bumps org.apache.maven.plugin-testing:maven-plugin-testing-harness from 3.5.0 to 3.5.1.

---
updated-dependencies:
- dependency-name: org.apache.maven.plugin-testing:maven-plugin-testing-harness
  dependency-version: 3.5.1
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Group them logically and tidy things up.

Use the change detection strategy from maven-filtering

Depends on apache/maven-filtering#323

Fixes #453