Update CI.yml

.github/workflows/CI.yml

@@ -7,9 +7,13 @@ jobs:
     runs-on: ${{ matrix.os }}
 
     # Don't run tests when merging PRs, they would have been run already and tests
-    # should have passed. The following checks hat the committer's email
-    # contains noreply; if it does, it's probably from github actions.
-    if: ${{ !contains(github.event.head_commit.committer.email, 'noreply') }}
+    # should have passed. The following checks hat the committer's username is web-flow;
+    # if it is, it's probably from github actions.
+    # NOTE: Directly editing code on GitHub on the main branch pybasses tests, and is
+    # discouraged. If editing code on GitHub, please submit a PR by creating a temporary branch.
+    if: |
+      github.ref != 'refs/heads/main' ||
+      !contains(github.event.head_commit.committer.username, 'web-flow')
 
     continue-on-error: ${{ matrix.python-version == 3.6 || matrix.os == 'windows-latest' }}
     strategy: