Bump nttld/setup-ndk from 1.2.0 to 1.4.2

Bumps [nttld/setup-ndk](https://github.com/nttld/setup-ndk) from 1.2.0 to 1.4.2.
- [Release notes](https://github.com/nttld/setup-ndk/releases)
- [Commits](https://github.com/nttld/setup-ndk/compare/v1.2.0...v1.4.2)

---
updated-dependencies:
- dependency-name: nttld/setup-ndk
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/xamarin.yml

@@ -63,7 +63,7 @@ jobs:
       #  xcode-version: '12.x' # set the latest available Xcode 12
 
     - name: Setup Android NDK
-      uses: nttld/setup-ndk@v1.2.0
+      uses: nttld/setup-ndk@v1.4.2
       id: setup-ndk
       with:
         ndk-version: r21e