refactor: update type hints in utils/sysinfo.py

IPython/utils/sysinfo.py

@@ -29,7 +29,7 b' from IPython.utils import _sysinfo, encoding'
 # Code
 #-----------------------------------------------------------------------------
 
-def pkg_commit_hash(pkg_path):
+def pkg_commit_hash(pkg_path: str) -> tuple[str, str]:
     """Get short form of commit hash given directory `pkg_path`
 
     We get the commit hash from (in order of preference):
@@ -67,7 +67,7 b' def pkg_commit_hash(pkg_path):'
     return '(none found)', '<not found>'
 
 
-def pkg_info(pkg_path):
+def pkg_info(pkg_path: str) -> dict:
     """Return dict describing the context of this package
 
     Parameters
@@ -94,7 +94,7 b' def pkg_info(pkg_path):'
         default_encoding=encoding.DEFAULT_ENCODING,
         )
 
-def get_sys_info():
+def get_sys_info() -> dict:
     """Return useful information about IPython and the system, as a dict."""
     path = Path(__file__, "..").resolve().parent
     return pkg_info(str(path))