ci: use caching actions from godot-cpp

Author: unvermuthet

.github/workflows/builds.yml

@@ -63,18 +63,26 @@ jobs:
           em-version: 3.1.62
 
       # Build GDExtension (with caches)
-      - name: Cache .scons_cache
-        uses: actions/cache@v4
+
+      - name: Restore .scons_cache
+        uses: ./godot-cpp/.github/actions/godot-cache-restore
         with:
-          path: ${{ github.workspace }}/.scons-cache/
-          key: ${{ matrix.target.platform }}_${{ matrix.target.arch }}_${{ matrix.float-precision }}_${{ matrix.target-type }}_cache
+          scons-cache: ${{ github.workspace }}/.scons-cache/
+          cache-name: ${{ matrix.target.platform }}_${{ matrix.target.arch }}_${{ matrix.float-precision }}_${{ matrix.target-type }}
+
       - name: Build GDExtension Debug Build
         shell: sh
         env:
           SCONS_CACHE: ${{ github.workspace }}/.scons-cache/
         run: |
           scons target=${{ matrix.target-type }} platform=${{ matrix.target.platform }} arch=${{ matrix.target.arch }} precision=${{ matrix.float-precision }}
 
+      - name: Save .scons_cache
+        uses: ./godot-cpp/.github/actions/godot-cache-save
+        with:
+          scons-cache: ${{ github.workspace }}/.scons-cache/
+          cache-name: ${{ matrix.target.platform }}_${{ matrix.target.arch }}_${{ matrix.float-precision }}_${{ matrix.target-type }}
+
       # Sign the binary (macOS only)
       - name: Mac Sign
         # Disable sign if secrets are not set