Bump idna from 2.7 to 3.7 in /tests/local

Bumps [idna](https://github.com/kjd/idna) from 2.7 to 3.7.
- [Release notes](https://github.com/kjd/idna/releases)
- [Changelog](https://github.com/kjd/idna/blob/master/HISTORY.rst)
- [Commits](kjd/idna@v2.7...v3.7)

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

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

Author: dependabot[bot]

tests/local/requirements.txt

@@ -11,7 +11,7 @@ DateTime==4.3
 deepdiff==3.3.0
 f90nml==1.0.2
 gdown==5.1.0
-idna==2.7
+idna==3.7
 importlib-metadata==0.19
 jsonpickle==1.2
 locket==0.2.0