Merge pull request #10029 from kewisch/codeowners

chore: Update CODEOWNERS main ownership to Jon

Author: wmontwe

.github/CODEOWNERS

@@ -7,4 +7,4 @@
 /scripts/ci/ @thunderbird/build-release
 
 # CODEOWNERS protection
-/.github/CODEOWNERS @kewisch
+/.github/CODEOWNERS @Herbal7ea