Add recent Android API levels to instrumentation test matrix

Add API levels 28, 29, 31, 33, and 34 (Android 9-14) to the CI
emulator matrix. API 29 was previously marked flaky but is worth
retrying with current tooling. All use x86_64 + google_apis + stable
channel, consistent with the existing modern emulator configuration.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: pyricau

.github/workflows/main.yml

@@ -39,7 +39,11 @@ jobs:
           - 21
           - 23
           - 26
-          # - 29 flaky
+          - 28
+          - 29
+          - 31
+          - 33
+          - 34
         include:
           - arch: x86
             api-level: 16
@@ -49,11 +53,6 @@ jobs:
             api-level: 19
             target: google_apis
             channel: stable
-        # Failing (something about permissions maybe?
-        #  - arch: x86
-        #    api-level: 30
-        #    target: aosp_atd
-        #    channel: canary
     steps:
       - name: Enable KVM group perms
         run: |