chore(deps): bump actions/cache from 4 to 6

Bumps [actions/cache](https://github.com/actions/cache) from 4 to 6.
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](actions/cache@v4...v6)

---
updated-dependencies:
- dependency-name: actions/cache
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/ensure-aot-build.yml

@@ -54,7 +54,7 @@ jobs:
           11.0.100-preview.6.26359.118
 
     - name: Cache NuGet packages
-      uses: actions/cache@v4
+      uses: actions/cache@v6
       with:
         path: ~/.nuget/packages
         key: ${{ runner.os }}-${{ runner.arch }}-${{ matrix.tfm }}-nuget-${{ hashFiles('global.json', 'Directory.Build.props', 'Tests/AotCompatibility.TestApp/AotCompatibility.TestApp.csproj', 'NTComponents/NTComponents.csproj', 'NTComponents.Analyzers/NTComponents.Analyzers.csproj') }}