[SEI-9785] Require 70% patch coverage (#586)

## Describe your changes and provide context

## Testing performed to validate your change

Author: udpatil

.github/workflows/test.yml

@@ -146,7 +146,7 @@ jobs:
 
       # Now we upload the merged report to Codecov
       - name: Upload coverage to Codecov
-        uses: codecov/codecov-action@v3
+        uses: codecov/codecov-action@v4
         with:
           file: ./coverage.txt
           token: ${{ secrets.CODECOV_TOKEN }}

codecov.yml

@@ -7,6 +7,9 @@ coverage:
       default:
         threshold: 1% # allow this much decrease on project
         target: 50%
+    patch:
+      default:
+        target: 70%
 
 comment:
   layout: "reach,diff,flags,tree,betaprofiling"