chore(deps): bump actions/checkout from 2 to 4 (#6998)

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/generate.yml

@@ -32,7 +32,7 @@ jobs:
     name: "${{ matrix.name }}"
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
 
       - name: Install Repo MSRV toolchain
         run: |