Bump idna from 2.9 to 3.1

Bumps [idna](https://github.com/kjd/idna) from 2.9 to 3.1.
- [Release notes](https://github.com/kjd/idna/releases)
- [Changelog](https://github.com/kjd/idna/blob/master/HISTORY.rst)
- [Commits](kjd/idna@v2.9...v3.1)

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

requirements.txt

@@ -10,5 +10,5 @@ cdn-definitions==2.0.0 --hash=sha256:bb5592ab4dcac11636a523459fdbdd613460f0fdf42
 requests==2.25.1 --hash=sha256:c210084e36a42ae6b9219e00e48287def368a26d03a048ddad7bfee44f75871e --hash=sha256:27973dd4a904a4f13b263a19c866c13b92a39ed1c964655f025f3f8d3d75b804
 chardet==4.0.0 --hash=sha256:f864054d66fd9118f2e67044ac8981a54775ec5b67aed0441892edb553d21da5 --hash=sha256:0d6f53a15db4120f2b08c94f11e7d93d2c911ee118b6b30a04ec3ee8310179fa
 certifi==2020.12.5 --hash=sha256:719a74fb9e33b9bd44cc7f3a8d94bc35e4049deebe19ba7d8e108280cfd59830 --hash=sha256:1a4995114262bffbc2413b159f2a1a480c969de6e6eb13ee966d470af86af59c
-idna==2.9 --hash=sha256:a068a21ceac8a4d63dbfd964670474107f541babbd2250d61922f029858365fa
+idna==3.1 --hash=sha256:5205d03e7bcbb919cc9c19885f9920d622ca52448306f2377daede5cf3faac16 --hash=sha256:c5b02147e01ea9920e6b0a3f1f7bb833612d507592c837a6c49552768f4054e1
 PyYAML==5.4.1 --hash=sha256:4e0583d24c881e14342eaf4ec5fbc97f934b999a6828693a99157fde912540cc --hash=sha256:e1d4970ea66be07ae37a3c2e48b5ec63f7ba6804bdddfdbd3cfd954d25a82e63