fix(ci): add package.json.version to code cachekey

Before this, creating a release sometimes prevented vscode from
rebuilding and using the cache instead. Now we use the
package.json.version in the cache key to "bust" the cache if the
package.json version is updated (aka a release).

Fixes #5316

.github/workflows/ci.yaml

@@ -143,6 +143,10 @@ jobs:
         id: vscode-rev
         run: echo "::set-output name=rev::$(git rev-parse HEAD:./lib/vscode)"
 
+      - name: Get version
+        id: version
+        run: echo "::set-output name=version::$(jq -r .version package.json)"
+
       # We need to rebuild when we have a new version of Code or when any of
       # the patches changed.  Use VSCODE_CACHE_VERSION to force a rebuild.
       - name: Fetch prebuilt Code package from cache
@@ -150,7 +154,7 @@ jobs:
         uses: actions/cache@v3
         with:
           path: lib/vscode-reh-web-*
-          key: vscode-reh-package-${{ secrets.VSCODE_CACHE_VERSION }}-${{ steps.vscode-rev.outputs.rev }}-${{ hashFiles('patches/*.diff') }}
+          key: vscode-reh-package-${{ secrets.VSCODE_CACHE_VERSION }}-${{ steps.vscode-rev.outputs.rev }}-${{ steps.version.outputs.version }}-${{ hashFiles('patches/*.diff') }}
 
       - name: Build vscode
         if: steps.cache-vscode.outputs.cache-hit != 'true'