⬆️ Upgrade actions/checkout action to v6.0.1 (#34)

Author: renovate[bot]

.github/workflows/dart.yml

@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
 
       - uses: subosito/flutter-action@fd55f4c5af5b953cc57a2be44cb082c8f6635e8e # v2
         with:

.github/workflows/docs.yml

@@ -13,7 +13,7 @@ jobs:
 
     steps:
       - name: Get files
-        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6
+        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
 
       - uses: subosito/flutter-action@fd55f4c5af5b953cc57a2be44cb082c8f6635e8e # v2
         with:

.github/workflows/sync-labels.yml

@@ -12,7 +12,7 @@ jobs:
     name: Sync labels
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
       - uses: micnncim/action-label-syncer@3abd5ab72fda571e69fffd97bd4e0033dd5f495c # v1.3.0
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}