Update build_test.yml

Signed-off-by: James Struga <xhejmsstruga@gmail.com>

Author: struga0258

.github/workflows/build_test.yml

@@ -128,7 +128,7 @@ jobs:
         uses: actions/checkout@v2
 
       - name: '[Prep 2] Cache node modules'
-        uses: actions/cache@v2
+        uses: actions/cache@v4
         with:
           # npm cache files are stored in `~/.npm` on Linux/macOS
           path: |