update to ubuntu latest

Author: jdkent

.github/workflows/push_autogen.yml

@@ -6,7 +6,7 @@ on:
       - '**'
 jobs:
   update_generator:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     steps:
       - name: Checkout Generator
         uses: actions/checkout@v3
@@ -38,4 +38,4 @@ jobs:
           else
             git commit -m "${{ github.sha }}" -a
             git push -q https://github.com/neurostuff/neurostuff-sdk-generator.git ${{ github.ref_name }}
-          fi
+          fi