CI: (deps): Bump pyproj from 3.5.0 to 3.6.0 in /ci

Bumps [pyproj](https://github.com/pyproj4/pyproj) from 3.5.0 to 3.6.0.
- [Release notes](https://github.com/pyproj4/pyproj/releases)
- [Changelog](https://github.com/pyproj4/pyproj/blob/main/docs/history.rst)
- [Commits](pyproj4/pyproj@3.5.0...3.6.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

ci/requirements.txt

@@ -4,7 +4,7 @@ numpy==1.24.3
 pandas==1.5.3
 pooch==1.7.0
 pint==0.20.1
-pyproj==3.5.0
+pyproj==3.6.0
 scipy==1.10.1
 traitlets==5.9.0
 xarray==2023.1.0