[CI] Update lock workflow file

Author: hc-github-team-tf-provider-devex

.github/workflows/lock.yml

@@ -12,7 +12,7 @@ jobs:
     steps:
       # NOTE: When TSCCR updates the GitHub action version, update the template workflow file to avoid drift:
       # https://github.com/hashicorp/terraform-devex-repos/blob/main/modules/repo/workflows/lock.tftpl
-      - uses: dessant/lock-threads@1bf7ec25051fe7c00bdd17e6a7cf3d7bfb7dc771 # v5.0.1
+      - uses: dessant/lock-threads@7266a7ce5c1df01b1c6db85bf8cd86c737dadbe7 # v6.0.0
         with:
           process-only: 'issues, prs'
           github-token: ${{ github.token }}