fix: update ci script

Author: samaratungajs

.github/workflows/build.yaml

@@ -37,6 +37,10 @@ jobs:
             echo "command=install" >> $GITHUB_OUTPUT
             echo "runner=yarn" >> $GITHUB_OUTPUT
             exit 0
+          elif [ -f "${{ github.workspace }}/pnpm-lock.yaml" ]; then
+            echo "manager=pnpm" >> $GITHUB_OUTPUT
+            echo "command=install --frozen-lockfile" >> $GITHUB_OUTPUT
+            echo "runner=pnpm" >> $GITHUB_OUTPUT
           elif [ -f "${{ github.workspace }}/package.json" ]; then
             echo "manager=npm" >> $GITHUB_OUTPUT
             echo "command=ci" >> $GITHUB_OUTPUT