chore: upgrade test runner version to ubuntu-latest (#1485)

Author: erwolff

.github/workflows/test.yml

@@ -8,7 +8,7 @@ on:
 jobs:
   test:
     name: Test
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     strategy:
       matrix:
         node-version: [18.x, 20.x]
@@ -22,7 +22,7 @@ jobs:
     - run: yarn test
   all-jobs-pass:
     name: All jobs pass
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     needs:
       - test
     steps: