.github/workflows: bump checkout action version

Signed-off-by: Patrick Donnelly <pdonnell@ibm.com>

.github/workflows/create-backport-trackers.yml

@@ -38,7 +38,7 @@ jobs:
     # Backport checks need to be run ONLY on the main branch on ceph/ceph (not forks)
     if: github.ref == 'refs/heads/main' && github.repository == 'ceph/ceph'
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
         with:
           sparse-checkout: | 
               src/script/backport-create-issue

.github/workflows/diff-ceph-config.yml

@@ -25,7 +25,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout main branch for pull_request_target
-        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
         with:
           ref: 'refs/heads/main'
           path: ceph

.github/workflows/qa-symlink.yml

@@ -22,7 +22,7 @@ jobs:
     if: github.repository == 'ceph/ceph'
     steps:
       - name: Checkout verify-qa script from main branch
-        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
         with:
           ref: 'refs/heads/main'
           path: main
@@ -31,7 +31,7 @@ jobs:
           sparse-checkout-cone-mode: false
 
       - name: Checkout PR HEAD
-        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
         with:
           ref: ${{ github.event.pull_request.head.sha }}
           path: pull_request

.github/workflows/redmine-upkeep.yml

@@ -41,7 +41,7 @@ jobs:
     steps:
       - name: Checkout main branch for pull_request_target
         if: github.event_name == 'pull_request_target'
-        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
         with:
           ref: 'refs/heads/main'
           path: 'ceph'
@@ -49,7 +49,7 @@ jobs:
 
       - name: Checkout default branch for other events
         if: github.event_name != 'pull_request_target'
-        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
         with:
           path: 'ceph'
           fetch-depth: 0