chore: make workspace writable

as used in isc-codetidy, which has working codecov right now.

Author: isc-tleavitt

.github/workflows/main.yml

@@ -63,6 +63,7 @@ jobs:
         run: |
           echo "zpm \"install testcoverage\":1:1" > install-testcoverage
           docker exec --interactive $instance iris session $instance -B < install-testcoverage
+          chmod 777 $GITHUB_WORKSPACE
           
       - name: Build and Test
         run: |
@@ -73,10 +74,12 @@ jobs:
           # Run tests
           echo "zpm \"$package test -only $test_flags\":1:1" >> test.script
           docker exec --interactive $instance iris session $instance -B < build.script && docker exec --interactive $instance iris session $instance -B < test.script
+          
       - name: Upload coverage reports to Codecov with GitHub Action
         uses: codecov/codecov-action@v4.2.0
         env:
           CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
+          
       - name: Produce CE Artifact
         run: |
           echo "set version=##class(%ZPM.PackageManager.Developer.Module).NameOpen(\"git-source-control\").VersionString" > package.script