Delete dependabot-yarn2.yml

dependabot should support yarn v2 now

.github/workflows/dependabot-yarn2.yml

@@ -1,65 +0,0 @@
-# Automatically save updated `yarn.lock` file for dependabot PRs.
-# This is necessary because dependabot doesn't support Yarn v2 yet:
-# https://github.com/dependabot/dependabot-core/issues/1297
-#
-# Note: We use the `pull_request_target` event due to GitHub security measures.
-#       It is important to ensure we don't execute any untrusted PR code in this context.
-# See: https://github.blog/changelog/2021-02-19-github-actions-workflows-triggered-by-dependabot-prs-will-run-with-read-only-permissions/
-#      https://securitylab.github.com/research/github-actions-preventing-pwn-requests
-
-# Inspired from https://gist.github.com/amacneil/60bf679f357bad9d62103cfdc86cbd74
-
-name: Dependabot Yarn v2+ fix
-on:
-  - pull_request_target
-
-jobs:
-  fix-lockfile:
-    runs-on: ubuntu-latest
-    if: |
-      github.actor == 'dependabot[bot]' &&
-      contains(github.event.pull_request.head.ref, 'dependabot/npm_and_yarn/')
-
-    # IMPORTANT: setting YARN_ENABLE_SCRIPTS=false is critical to ensure that untrusted
-    # PRs can't add an npm package and then use that to execute untrusted code in
-    # a trusted context. See links at the top of this workflow for further details.
-    # See also: https://github.com/yarnpkg/berry/issues/1679#issuecomment-669937860
-    env:
-      YARN_ENABLE_SCRIPTS: false
-      YARN_ENABLE_IMMUTABLE_INSTALLS: false
-
-    steps:
-      - uses: actions/checkout@v2.3.5
-        with:
-          # Using a Personal Access Token here is required to trigger workflows on our new commit.
-          # The default GitHub token doesn't trigger any workflows.
-          # See: https://github.community/t/push-from-action-does-not-trigger-subsequent-action/16854/2
-          token: ${{ secrets.DEPENDABOT_TOKEN }}
-          ref: ${{ github.event.pull_request.head.ref }}
-          fetch-depth: 2
-
-      - name: Setup node
-        uses: actions/setup-node@v2.4.1
-        with:
-          node-version: 16.x
-
-      - name: Restore cache
-        uses: actions/cache@v2.1.4
-        with:
-          path: .yarn/cache
-          key: ${{ runner.os }}-yarn-${{ hashFiles('**/yarn.lock') }}
-          restore-keys: ${{ runner.os }}-yarn-
-
-      - run: git checkout HEAD~1 yarn.lock
-
-      - run: yarn install --mode=skip-build
-
-      - run: yarn dedupe
-
-      - name: Commit yarn.lock
-        run: |
-          git config user.name "dependabot-fix"
-          git config user.email "dependabot-fix@example.com"
-          git add yarn.lock
-          git commit -m '[dependabot skip] Fix yarn.lock'
-          git push