MNT: (deps): Bump pandas from 1.4.3 to 1.4.4 in /ci

Bumps [pandas](https://github.com/pandas-dev/pandas) from 1.4.3 to 1.4.4.
- [Release notes](https://github.com/pandas-dev/pandas/releases)
- [Changelog](https://github.com/pandas-dev/pandas/blob/main/RELEASE.md)
- [Commits](pandas-dev/pandas@v1.4.3...v1.4.4)

---
updated-dependencies:
- dependency-name: pandas
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

ci/requirements.txt

@@ -3,6 +3,6 @@ python>=3.8
 matplotlib==3.5.3
 numpy==1.23.2
 netcdf4==1.6.0
-pandas==1.4.3
+pandas==1.4.4
 erddapy==1.2.1
 pyyaml