CI: Upgrade actions/cache version

.github/workflows/msys2-build.yml

@@ -47,7 +47,7 @@ jobs:
 
     # Cache xmake build
     - name: Retrieve cached xmake build
-      uses: actions/cache@v2
+      uses: actions/cache@v3
       id: xmake_cache
       with:
         path: ${{ runner.workspace }}/xmake_git
@@ -78,7 +78,7 @@ jobs:
   
     # Cache xmake dependencies
     - name: Retrieve cached xmake dependencies
-      uses: actions/cache@v2
+      uses: actions/cache@v3
       with:
         path: ${{ env.XMAKE_GLOBALDIR }}/.xmake/packages
         key: MinGW-${{ matrix.arch }}-${{ matrix.mode }}-${{ steps.dep_hash.outputs.hash }}-r4