chore: Sync common workflows (#58)

This is an automated sync of common workflows for this organization.
The upstream source is:

shaka-project/shaka-github-tools@8bfe75f

Co-authored-by: Shaka Bot <[email protected]>

Author: shaka-bot

.github/workflows/sync-labels.yaml

@@ -18,7 +18,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
         with:
           repository: shaka-project/shaka-github-tools
 

.github/workflows/update-issues.yaml

@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
         with:
           repository: shaka-project/shaka-github-tools