Update set-output to new env var approach

Ref. https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/#examples

.github/workflows/build.yml

@@ -26,7 +26,7 @@ jobs:
       # https://github.com/actions/cache/blob/main/examples.md#node---yarn
       - name: Get yarn cache directory path
         id: yarn-cache-dir-path
-        run: echo "::set-output name=dir::$(yarn cache dir)"
+        run: echo "dir=$(yarn cache dir)" >> $GITHUB_OUTPUT
 
       # https://github.com/actions/cache/blob/main/examples.md#node---yarn
       - name: Cache yarn packages