chore(ci): Use lowercase for convential commits check (#9492)

### Description

The team wanted to go lowercase, so we go lowercase.

.github/workflows/lint-pr-title.yml

@@ -24,7 +24,7 @@ jobs:
           requireScope: false
           # Configure additional validation for the subject based on a regex.
           # Ensures that the subject doesn't start with an uppercase character.
-          subjectPattern: ^[A-Z].*$
+          subjectPattern: ^[^A-Z].*$
           # If `subjectPattern` is configured, you can use this property to override
           # the default error message that is shown when the pattern doesn't match.
           # The variables `subject` and `title` can be used within the message.