fix(infra): remove --frozen-lockfile from install for ui5 manifest (#4587)

Author: mikicvi-SAP

.github/workflows/renovate-pr-automation.yml

@@ -58,7 +58,7 @@ jobs:
                   cache: 'pnpm'
 
             - name: Install pnpm modules
-              run: pnpm install --frozen-lockfile
+              run: pnpm install
 
             - name: Build project
               run: pnpm build