Fix downloaded artifacts folder

.github/actions/install_extension/action.yml

@@ -6,5 +6,5 @@ runs:
   using: composite
   steps:
   - name: Install Extension
-    run: tar xfv "artifact/install-${{ inputs.pg_major }}.tar" --directory /
+    run: tar xfv "install-${{ inputs.pg_major }}.tar" --directory /
     shell: bash

.github/workflows/flaky_test_debugging.yml

@@ -49,6 +49,7 @@ jobs:
     - name: Configure, Build, and Install
       run: "./ci/build-citus.sh"
     - uses: actions/upload-artifact@v3.1.1
+      name: build-${{ env.pg_major }}
       with:
         path: |-
           ./build-${{ env.pg_major }}/*