Update lock files action2 (#2098)

* Rename file to match their example
* Multiple failures on v5 probably in relation to Upcoming change to GitHub App installation token format at https://github.blog/changelog/2026-05-15-github-app-installation-tokens-per-request-override-header
* Main organization allowing v6.

Author: Martii

.github/workflows/lock.yml .github/workflows/lock-threads.yml.github/workflows/lock.yml renamed to .github/workflows/lock-threads.yml

@@ -4,20 +4,20 @@ on:
   schedule:
     - cron: '0 0 * * *'
   workflow_dispatch:
-    
+
 permissions:
   issues: write
   pull-requests: write
   discussions: write
 
 concurrency:
   group: lock-threads
-  
+
 jobs:
   action:
     runs-on: ubuntu-latest
     steps:
-      - uses: dessant/lock-threads@v5
+      - uses: dessant/lock-threads@v6
         with:
           github-token: ${{ github.token }}
           issue-inactive-days: '1'