chore(deps): update actions/checkout action to v6

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/gitleaks.yml

@@ -22,6 +22,6 @@ jobs:
   gitleaks:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     - name: gitleaks-action
       uses: zricethezav/gitleaks-action@master

.github/workflows/rebase.yml

@@ -25,7 +25,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout the latest code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
           fetch-depth: 0 # otherwise, you will fail to push refs to dest repo

.github/workflows/renovate.yml

@@ -25,7 +25,7 @@ jobs:
   renovate-helmrelease:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
       with:
         fetch-depth: 1
 

.github/workflows/size.yaml

@@ -24,7 +24,7 @@ jobs:
   update_labels:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - uses: actions-ecosystem/action-size@v2
         id: size