Fix improper capitalization of build diagnostics (#3217)

Signed-off-by: Brentley Jones <[email protected]>

Author: brentleyjones

xcodeproj/internal/bazel_integration_files/process_bazel_build_log.py

@@ -20,6 +20,9 @@
     re.VERBOSE,
 )
 
+def _uppercase_first_letter(s: str) -> str:
+    return s[:1].upper() + s[1:]
+
 def _main(command: List[str]) -> None:
 
     def _signal_handler(signum, frame):
@@ -59,7 +62,7 @@ def _signal_handler(signum, frame):
 
     def _replacement(match: re.Match) -> str:
         message = f"""\
-{match.group("loc")}{match.group("sev")}{match.group("msg").capitalize()}\
+{match.group("loc")}{match.group("sev")}{uppercase_first_letter(match.group("msg"))}\
 """
 
         if message.startswith(execution_root):