fix: Combine ghp_ and gho_ token validation to resolve SonarCloud duplicate code warning

- Merge identical return True statements for ghp_ and gho_ tokens
- Both token types use same length validation (>= 40)
- Resolves SonarCloud code duplication warning

Author: garotm

githubauthlib/github_auth.py

@@ -61,9 +61,7 @@ def _validate_token(token: str) -> bool:
     # GitHub organization tokens start with 'gho_' and are 40 characters long
     # GitHub fine-grained tokens start with 'github_pat_' and are longer
     # Allow for some flexibility in token length for testing
-    if token.startswith("ghp_") and len(token) >= 40:
-        return True
-    elif token.startswith("gho_") and len(token) >= 40:
+    if (token.startswith("ghp_") or token.startswith("gho_")) and len(token) >= 40:
         return True
     elif token.startswith("github_pat_") and len(token) > 40:
         return True