Bump actions/checkout from 2 to 6

Bumps [actions/checkout](https://github.com/actions/checkout) from 2 to 6.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v2...v6)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/build-pr.yml

@@ -15,7 +15,7 @@ jobs:
     steps:
 
       - name: Sjekk ut kode
-        uses: actions/checkout@v2.3.4
+        uses: actions/checkout@v6
 
       - name: Cache node modules
         uses: actions/[email protected]

.github/workflows/build.yml

@@ -13,7 +13,7 @@ jobs:
         runs-on: ubuntu-latest
         steps:
             - name: Sjekk ut kode
-              uses: actions/checkout@v2.3.4
+              uses: actions/checkout@v6
 
             - name: Hent tag
               run: |

.github/workflows/codeql-analysis-with-atm-query-pack.yml

@@ -30,7 +30,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v6
 
       # Initializes the CodeQL tools for scanning.
       - name: Initialize CodeQL

.github/workflows/codeql-analysis.yml

@@ -25,7 +25,7 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v2.3.4
+      uses: actions/checkout@v6
       with:
         # We must fetch at least the immediate parents so that if this is
         # a pull request then we can checkout the head.

.github/workflows/promote.yml

@@ -30,7 +30,7 @@ jobs:
         run: echo "IMAGE=$IMAGE_BASE:$(echo ${{ steps.issue_comment.outputs.title }} | awk '{print $NF}')" >> $GITHUB_ENV
 
       - name: Sjekk ut kode
-        uses: actions/checkout@v2
+        uses: actions/checkout@v6
         with:
           ref: ${{ steps.issue_comment.outputs.sha }}