Revert "workflows clang-cl updated to Clang 15.0.6"

This reverts commit d3dd243.

LLVM stopped providing exe for win64/32 so
the KyleMayes/install-llvm-action@v1 action is failing.

Author: silverqx

.github/workflows/clang-cl.yml

@@ -183,12 +183,12 @@ jobs:
       with:
         path: |
           C:/Program Files/LLVM
-        key: llvm-15.0.6
+        key: llvm-14.0.6
 
-    - name: Install LLVM and Clang 15.0.6
+    - name: Install LLVM and Clang 14.0.6
       uses: KyleMayes/install-llvm-action@v1
       with:
-        version: "15.0.6"
+        version: "14.0.6"
         force-version: true
         cached: ${{ steps.llvm-cached.outputs.cache-hit }}