Bump KyleMayes/install-llvm-action from 1 to 2

Bumps [KyleMayes/install-llvm-action](https://github.com/kylemayes/install-llvm-action) from 1 to 2.
- [Release notes](https://github.com/kylemayes/install-llvm-action/releases)
- [Changelog](https://github.com/KyleMayes/install-llvm-action/blob/master/CHANGELOG.md)
- [Commits](KyleMayes/install-llvm-action@v1...v2)

---
updated-dependencies:
- dependency-name: KyleMayes/install-llvm-action
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/tests.yml

@@ -56,7 +56,7 @@ jobs:
         Add-Content $env:GITHUB_PATH "C:\ProgramData\mingw64\mingw64\bin"
 
     - name: Setup LLVM and Clang
-      uses: KyleMayes/install-llvm-action@v1
+      uses: KyleMayes/install-llvm-action@v2
       if: ${{ matrix.llvm-version != '' }}
       with:
         version: ${{ matrix.llvm-version }}