fixup: update system first

Author: fizyk

.github/workflows/single-postgres.yml

@@ -39,6 +39,12 @@ jobs:
         uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python-version }}
+      - name: Update system
+        run: |
+          apt get upgrade
+#      - name: Uninstall PostgreSQL
+#        run: |
+#          apt remove -y postgresql-common postgresql-client-common
       - uses: ankane/setup-postgres@v1
         with:
           postgres-version: ${{ inputs.postgresql }}