Chore: Actions updates and cleanup (#8377)

## Summary

...

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-8377-WIP-Chore-Actions-updates-and-cleanup-2f66d73d3650818483a8dffa32a6f245)
by [Unito](https://www.unito.io)

---------

Co-authored-by: Amp <amp@ampcode.com>

.github/workflows/release-version-bump.yaml

@@ -65,7 +65,7 @@ jobs:
 
       - name: Close stale nightly version bump PRs
         if: github.event_name == 'schedule'
-        uses: actions/github-script@v7
+        uses: actions/github-script@v8
         with:
           github-token: ${{ github.token }}
           script: |
@@ -118,7 +118,7 @@ jobs:
             core.info(`Closed ${closed.length} stale PR(s).`)
 
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           ref: ${{ steps.prepared-inputs.outputs.branch }}
           fetch-depth: 0
@@ -142,12 +142,12 @@ jobs:
           echo "✅ Branch '$BRANCH' exists"
 
       - name: Install pnpm
-        uses: pnpm/action-setup@41ff72655975bd51cab0327fa583b6e92b6d3061
+        uses: pnpm/action-setup@41ff72655975bd51cab0327fa583b6e92b6d3061 # v4.2.0
         with:
           version: 10
 
       - name: Setup Node.js
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
           node-version: lts/*
 
@@ -180,7 +180,7 @@ jobs:
           echo "capitalised=${CAPITALISED_TYPE@u}" >> "$GITHUB_OUTPUT"
 
       - name: Create Pull Request
-        uses: peter-evans/create-pull-request@271a8d0340265f705b14b6d32b9829c1cb33d45e
+        uses: peter-evans/create-pull-request@c0f553fe549906ede9cf27b5156039d195d2ece0 # v8.1.0
         with:
           token: ${{ secrets.PR_GH_TOKEN }}
           commit-message: '[release] Increment version to ${{ steps.bump-version.outputs.NEW_VERSION }}'