chore: Upgrade stalebot action to use v10 (due to Node20 deprecation)

PiperOrigin-RevId: 933916495

Author: matthew29tang

.github/workflows/google-contributor-stale.yml

@@ -14,12 +14,13 @@ jobs:
       issues: write
 
     steps:
-      - uses: actions/stale@v5
+      - uses: actions/stale@v10
         with:
           repo-token: ${{ secrets.GITHUB_TOKEN }}
           any-of-labels: "google-contributor"
           days-before-pr-stale: 14
           days-before-pr-close: 0
+          operations-per-run: 100
           stale-pr-label: "status:stale"
           exempt-pr-labels: "override-stale"
           close-pr-message: >

.github/workflows/stale.yml

@@ -14,11 +14,12 @@ jobs:
       issues: write
 
     steps:
-    - uses: actions/stale@v5
+    - uses: actions/stale@v10
       with:
         repo-token: ${{ secrets.GITHUB_TOKEN }}
         days-before-issue-stale: 7
         days-before-issue-close: 2
+        operations-per-run: 100
         stale-issue-label: "status:stale"
         close-issue-reason: not_planned
         any-of-labels: "status:awaiting user response"