Rename coverage file to coverage.txt per Codecov docs

Author: MimoJanra

.github/workflows/test.yml

@@ -24,11 +24,11 @@ jobs:
           cache: true
 
       - name: Run tests
-        run: go test -v -race -coverprofile=coverage.out ./...
+        run: go test -v -race -coverprofile=coverage.txt ./...
 
       - name: Check coverage
         run: |
-          coverage=$(go tool cover -func=coverage.out | grep total | awk '{print $3}' | sed 's/%//')
+          coverage=$(go tool cover -func=coverage.txt | grep total | awk '{print $3}' | sed 's/%//')
           echo "Coverage: ${coverage}%"
           if (( $(echo "$coverage < 75" | bc -l) )); then
             echo "Coverage is below 75%"
@@ -39,6 +39,6 @@ jobs:
         uses: codecov/codecov-action@v5
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
-          files: ./coverage.out
+          files: ./coverage.txt
           flags: unittests
           name: codecov-${{ matrix.go-version }}