test_on_ubuntu.yml in duckdb-0.3.1.0

- old
+ new

@@ -7,10 +7,10 @@
 
     runs-on: ubuntu-latest
     strategy:
       matrix:
         ruby: ['2.6.8', '2.7.4', '3.0.2', 'head']
-        duckdb: ['0.2.8', '0.2.9']
+        duckdb: ['0.3.0', '0.3.1']
 
     steps:
     - uses: actions/checkout@v2
 
     - name: Set up Ruby