Update Cocoapods version in CI after DT_TOOLCHAIN_DIR fix is in an official release #133584
Description
An error was introduced to Cocoapods with Xcode 15, which causes macOS builds to fail.
error: DT_TOOLCHAIN_DIR cannot be used to evaluate LD_RUNPATH_SEARCH_PATHS, use TOOLCHAIN_DIR instead (in target 'Pods-Runner' from project 'Pods')
The issue was fixed upstream in Cocoapods (CocoaPods/CocoaPods#12009), but the fix is not in an official release yet.
We added a workaround to Flutter in #132755, but we had to ignore some errors in tests due to this.
This is the tracking issue to upgrade Cocoapods in CI once CocoaPods/CocoaPods#12009 is in an official release.