chore(deps): update actions/checkout action to v4

Author: renovate[bot]

.github/workflows/closed_references.yml

@@ -19,7 +19,7 @@ jobs:
     runs-on: ubuntu-latest
     name: Find closed references
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - uses: actions/setup-node@v2-beta
         with:
           node-version: "14"

.github/workflows/conventional_commits.yml

@@ -24,7 +24,7 @@ jobs:
     name: Validate PR title
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - id: config
         uses: ory/ci/conventional_commit_config@master
         with:

.github/workflows/labels.yml

@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
       - name: Synchronize Issue Labels
         uses: ory/label-sync-action@v0
         with: