Add cache hit condition

Author: Kaleidosium

.github/workflows/static.yml

@@ -23,12 +23,14 @@ jobs:
         uses: actions/checkout@v6
 
       - name: Cache Emscripten
+        id: cache-emsdk
         uses: actions/cache@v4
         with:
           path: ~/emsdk
           key: emsdk-${{ runner.os }}-latest
 
       - name: Install Emscripten
+        if: steps.cache-emsdk.outputs.cache-hit != 'true'
         run: |
           git clone https://github.com/emscripten-core/emsdk.git ~/emsdk
           ~/emsdk/emsdk install latest