Fix EP version for jacoco coverage step (#571)

I wanted to extract out the EP version to some kind of variable so we only need to update it in one place, but couldn't figure out how. So this just fixes the version in one more place.

.github/workflows/continuous-integration.yml

@@ -63,7 +63,7 @@ jobs:
         with:
           arguments: coveralls
         continue-on-error: true
-        if: runner.os == 'Linux' && matrix.java == '11' && matrix.epVersion == '2.10.0' && github.repository == 'uber/NullAway'
+        if: runner.os == 'Linux' && matrix.java == '11' && matrix.epVersion == '2.11.0' && github.repository == 'uber/NullAway'
       - name: Check that Git tree is clean after build and test
         run: ./.buildscript/check_git_clean.sh
   publish_snapshot: