Pin github-changes version

Fixes scala#187

Author: MaximeKjaer

.github/workflows/deploy.yml

@@ -41,7 +41,7 @@ jobs:
         run: yarn vscode:publish --pat ${{ secrets.VS_MARKETPLACE_TOKEN }}
 
       - name: Generate GitHub Release notes
-        run: npx github-changes --owner $OWNER --repository $REPOSITORY --branch $RELEASE_BRANCH --no-merges --title "Changelog" --for-tag ${GITHUB_REF#refs/*/} --file release-notes.md
+        run: yarn run github-changes --owner $OWNER --repository $REPOSITORY --branch $RELEASE_BRANCH --no-merges --title "Changelog" --for-tag ${GITHUB_REF#refs/*/} --file release-notes.md
       - name: Create GitHub Release
         id: create-release
         uses: actions/create-release@v1

package.json

@@ -44,6 +44,7 @@
     "devDependencies": {
         "@types/node": "^14.6.4",
         "ajv": "^6.12.4",
+        "github-changes": "^1.1.1",
         "npm-run-all": "^4.1.5",
         "rimraf": "^3.0.2",
         "ts-node": "^9.0.0",