Use --immutable flag whenever "yarn install" is called by a tool

Fixes #347

Change-Id: I1b8423f9cef46a425c1ec7665c8285af10c56df6

.github/workflows/github-release.yml

@@ -17,7 +17,7 @@ jobs:
       - uses: actions/setup-node@v4
         with:
           node-version: "18"
-      - run: yarn install
+      - run: yarn install --immutable
       - run: yarn build
       - run: |
           version=`git describe --dirty --tags || echo unknown`