build(deps): bump mypy from 1.15.0 to 1.16.1 (#416)

* build(deps): bump mypy from 1.15.0 to 1.16.1

Bumps [mypy](https://github.com/python/mypy) from 1.15.0 to 1.16.1.
- [Changelog](https://github.com/python/mypy/blob/master/CHANGELOG.md)
- [Commits](python/mypy@v1.15.0...v1.16.1)

---
updated-dependencies:
- dependency-name: mypy
  dependency-version: 1.16.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

* fix type hints

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Saugat Pachhai (सौगात) <suagatchhetri@outlook.com>

Author: dependabot[bot]

pyproject.toml

@@ -52,7 +52,7 @@ tests = [
     "proxy.py",
 ]
 dev = [
-    "mypy==1.15.0",
+    "mypy==1.16.1",
     "scmrepo[tests]",
     "types-certifi",
     "types-mock",

src/scmrepo/git/credentials.py

@@ -535,7 +535,7 @@ def __init__(
         path: Optional[str] = None,
         username: Optional[str] = None,
         password: Optional[str] = None,
-        password_expiry_utc: Optional[int] = None,
+        password_expiry_utc: Optional[str] = None,
         url: Optional[str] = None,
     ):
         self.protocol = protocol