ci: always save Github Actions cache after V8 upgrade (#443)

Author: piscisaureus

.github/workflows/ci.yml

@@ -112,8 +112,11 @@ jobs:
             target/*/.*
             target/*/build
             target/*/deps
-          key: ${{ matrix.config.target }}-${{ matrix.config.variant }}-${{ hashFiles('Cargo.lock') }}
-          restore-keys: ${{ matrix.config.target }}-${{ matrix.config.variant }}-
+          key:
+            ${{ matrix.config.target }}-${{ matrix.config.variant }}-${{
+            hashFiles('./Cargo.lock', './v8/include/v8-version.h') }}
+          restore-keys:
+            ${{ matrix.config.target }}-${{ matrix.config.variant }}-
 
       - name: Install and start sccache
         shell: pwsh