build(deps): bump actions/checkout from 2 to 3

Bumps [actions/checkout](https://github.com/actions/checkout) from 2 to 3.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v2...v3)

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

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

.github/workflows/build.yaml

@@ -16,7 +16,7 @@ jobs:
     outputs:
       version: ${{ steps.set-version.outputs.version }}
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - name: set version
         id: set-version
         run: |
@@ -29,7 +29,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout latest code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Extract version of Go to use
         run: echo "GOVERSION=$(cat go.mod | grep -w "go" | awk ' { print $2 } ' | grep -w "^[^v]")" >> $GITHUB_ENV
@@ -51,7 +51,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout latest code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
         with:
           fetch-depth: 0
 
@@ -89,7 +89,7 @@ jobs:
           repo: nais/nais-ppa
 
       - name: Checkout nais-ppa
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
         with:
           repository: nais/nais-ppa
           token: ${{ steps.get-token.outputs.token }}