Upgrade: [dependabot] - bump actions/checkout from 4.3.1 to 6.0.2

Bumps [actions/checkout](https://github.com/actions/checkout) from 4.3.1 to 6.0.2.
- [Release notes](https://github.com/actions/checkout/releases)
- [Commits](actions/checkout@v4.3.1...v6.0.2)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: 6.0.2
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/error_handling_utils_tests.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
-        uses: actions/checkout@v6
+        uses: actions/checkout@v6.0.2
 
       - name: Set up Python
         uses: actions/setup-python@v6

.github/workflows/my-vaccs-int-tests.yml

@@ -43,7 +43,7 @@ jobs:
           echo "Workflow triggered by allowed repository: $CALLER_REPO"
 
       - name: Checkout main
-        uses: actions/checkout@v6
+        uses: actions/checkout@v6.0.2
         with:
           repository: NHSDigital/eligibility-signposting-api-regression-tests
           ref: main

.github/workflows/performance_tests.yml

@@ -52,7 +52,7 @@ jobs:
           echo "spawn_rate: ${spawn_rate}"
 
       - name: Checkout
-        uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
 
       # using git commit sha for version of action to ensure we have stable version
       - name: Install asdf

.github/workflows/quality-checks.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - name: Checkout code
-        uses: actions/checkout@v6
+        uses: actions/checkout@v6.0.2
         with:
           ref: ${{ github.event.pull_request.head.sha || github.sha }}
           fetch-depth: 0
@@ -69,7 +69,7 @@ jobs:
             .git
 
       - name: SonarQube
-        uses: actions/checkout@v6
+        uses: actions/checkout@v6.0.2
         with:
           ref: ${{ github.event.pull_request.head.sha || github.sha }}
           fetch-depth: 0 # Shallow clones should be disabled for a better relevancy of analysis

.github/workflows/regression_tests.yml

@@ -97,7 +97,7 @@ jobs:
           echo run identifier "$ID"-"$ENV"  >> "$GITHUB_STEP_SUMMARY"
 
       - name: Checkout
-        uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
         with:
           ref: ${{ inputs.github_tag }}
 

.github/workflows/release.yml

@@ -30,7 +30,7 @@ jobs:
       spec_version: ${{steps.output_version_tag.outputs.SPEC_VERSION}}
     steps:
       - name: Checkout code
-        uses: actions/checkout@v6
+        uses: actions/checkout@v6.0.2
         with:
           ref: ${{ env.BRANCH_NAME }}
           fetch-depth: 0