[actions] Update clang version param used by build script. (Emscripten)

Author: Dandielo

.github/workflows/build-validate-emscripten.yaml

@@ -23,4 +23,4 @@ jobs:
       host-platform: 'windows-latest'
       target-platform: 'web'
       targets: "${{ matrix.project }}-${{ matrix.pipeline }}-${{ matrix.config }}"
-      clang-version: '21'
+      clang-version: '22'