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

Author: renovate[bot]

.github/workflows/ci.yml

@@ -13,7 +13,7 @@ jobs:
         os: [ubuntu-latest]
         java: [8, 11, 17]
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v6
       - uses: actions/setup-java@v3
         with:
           distribution: "temurin"
@@ -27,7 +27,7 @@ jobs:
   check:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v6
       - uses: actions/setup-java@v3
         with:
           distribution: "temurin"

.github/workflows/pr-auditor.yml

@@ -9,7 +9,7 @@ jobs:
   check-pr:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           repository: 'sourcegraph/devx-service'
           token: ${{ secrets.PR_AUDITOR_TOKEN }}

.github/workflows/release.yml

@@ -7,7 +7,7 @@ jobs:
   publish:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v6
       - uses: olafurpg/setup-scala@v13
       - uses: olafurpg/setup-gpg@v3
       - run: git fetch --unshallow

.github/workflows/sourcegraph.yml

@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     name: "Upload SCIP"
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v6
       - uses: actions/setup-java@v3
         with:
           distribution: "temurin"