use a specific path on windows

oops use a supported version

Author: 2bndy5

.github/workflows/cpp-lint-action.yml

@@ -40,19 +40,27 @@ jobs:
         if: steps.cache-build.outputs.cache-hit != 'true'
         run: mkdir build && cmake -Bbuild src
 
+      - name: install custom clang version
+        if: runner.os == 'Windows' && matrix.clang-version == '20'
+        uses: KyleMayes/install-llvm-action@v2
+        with:
+          version: 21.1.8
+          directory: ${{ runner.temp }}/llvm
+
       - name: Run linter as action
         uses: cpp-linter/cpp-linter-action@fix-364
         id: linter
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          llvm-dir: ${{ runner.temp }}/llvm
         with:
           style: file
           files-changed-only: false
           # to ignore all build folder contents
           ignore: build
           database: build
           verbosity: debug
-          version: ${{ matrix.clang-version != '20' && matrix.clang-version || ''}}
+          version: ${{ matrix.clang-version == '20' && runner.os == 'Windows' && env.llvm-dir || matrix.clang-version }}
           thread-comments: ${{ matrix.clang-version == '17' && 'update' }}
           file-annotations: ${{ matrix.clang-version == '17' }}
           extra-args: -std=c++14 -Wall