[CI] Upload build cache before running tests

.github/workflows/linux_builds.yml

@@ -78,8 +78,8 @@ jobs:
           sudo rm -rf /usr/local/lib/android
           echo "Disk usage after:" && df -h
 
-      - name: Setup Godot build cache
-        uses: ./.github/actions/godot-cache
+      - name: Restore Godot build cache
+        uses: ./.github/actions/godot-cache-restore
         with:
           cache-name: ${{ matrix.cache-name }}
         continue-on-error: true
@@ -98,6 +98,12 @@ jobs:
           target: ${{ matrix.target }}
           tools: ${{ matrix.tools }}
 
+      - name: Save Godot build cache
+        uses: ./.github/actions/godot-cache-save
+        with:
+          cache-name: ${{ matrix.cache-name }}
+        continue-on-error: true
+
       # Generate mono glue
       - name: Generate Mono glue code
         if: ${{ matrix.build-mono }}