batch changes - update checkout v2 to v3 (#262)

Co-authored-by: Sourcegraph <batch-changes@sourcegraph.com>

Author: daxmc99

.github/workflows/lsif.yml

@@ -6,7 +6,7 @@ jobs:
     runs-on: ubuntu-latest
     container: sourcegraph/lsif-go
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - name: Generate LSIF data
         run: lsif-go
       - name: Upload LSIF data

.github/workflows/pr-auditor.yml

@@ -8,7 +8,7 @@ jobs:
   check-pr:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
         with: { repository: 'sourcegraph/sourcegraph' }
       - uses: actions/setup-go@v2
         with: { go-version: '1.18' }

.github/workflows/release.yml

@@ -11,7 +11,7 @@ jobs:
     steps:
       -
         name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       -
         name: Unshallow
         run: git fetch --prune --unshallow