chore(deps): update actions/upload-artifact action to v6

Author: renovate[bot]

.github/workflows/verify_cla_signature_pr.yml

@@ -59,7 +59,7 @@ jobs:
           EMPLOYER_CLA_LINK: https://raw.githubusercontent.com/phcode-dev/contributor-license-agreement/main/employer_contributor_license_agreement.md
           PERSONAL_CLA_LINK: https://raw.githubusercontent.com/phcode-dev/contributor-license-agreement/main/personal_contributor_licence_agreement.md
 
-      - uses: actions/upload-artifact@v5
+      - uses: actions/upload-artifact@v6
         with:
           name: prcontext
           path: .tmp/