Expand flaky-retry to cover release workflows

- Eligibility regex now matches Python Native Builds, Verify Builds,
  and Test Fips Mode (the FIPS jobs share the same flakiness profile).
- workflow_run trigger now listens to all three entry points that
  invoke ci.yml: "Pull Request or Push", "Auto-Release", and
  "Build and Release".  A flaky release run is at least as worth
  retrying as a flaky PR run.
- Gate raised to run_attempt <= 2 so a single run can be retried up
  to twice (attempts 2 and 3) before giving up.

Author: Daniel A. Wozniak

.github/workflows/retry-flaky-verify.yml

@@ -11,7 +11,9 @@ name: Retry Flaky CI
 
 on:
   workflow_run:
-    workflows: ["Pull Request or Push"]
+    # Catch the three entry points that invoke ci.yml: regular PR/push
+    # CI plus both release pipelines.
+    workflows: ["Pull Request or Push", "Auto-Release", "Build and Release"]
     types: [completed]
 
 jobs: