Bump idna from 2.10 to 3.3

Bumps [idna](https://github.com/kjd/idna) from 2.10 to 3.3.
- [Release notes](https://github.com/kjd/idna/releases)
- [Changelog](https://github.com/kjd/idna/blob/master/HISTORY.rst)
- [Commits](kjd/idna@v2.10...v3.3)

---
updated-dependencies:
- dependency-name: idna
  dependency-type: indirect
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

docs-requirements.txt

@@ -14,7 +14,7 @@ charset-normalizer==2.0.1
     # via requests
 docutils==0.17.1
     # via sphinx
-idna==2.10
+idna==3.3
     # via requests
 imagesize==1.2.0
     # via sphinx

test-requirements.txt

@@ -24,7 +24,7 @@ cssselect==1.1.0
     # via -r test-requirements.in
 docutils==0.17.1
     # via sphinx
-idna==2.10
+idna==3.3
     # via requests
 imagesize==1.2.0
     # via sphinx