Bump mechanicalsoup from 1.1.0 to 1.3.0 (#72)

Bumps [mechanicalsoup](https://github.com/MechanicalSoup/MechanicalSoup) from 1.1.0 to 1.3.0.
- [Release notes](https://github.com/MechanicalSoup/MechanicalSoup/releases)
- [Changelog](https://github.com/MechanicalSoup/MechanicalSoup/blob/main/docs/ChangeLog.rst)
- [Commits](MechanicalSoup/MechanicalSoup@v1.1.0...v1.3.0)

---
updated-dependencies:
- dependency-name: mechanicalsoup
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

requirements.txt

@@ -9,7 +9,7 @@ freesasa==2.1.0
 idna==3.3
 isort==5.10.1
 lxml==4.9.1
-mechanicalsoup==1.1.0
+mechanicalsoup==1.3.0
 mypy-extensions==0.4.3
 numpy
 pandas