build(deps): bump idna from 3.6 to 3.7 in /docs (ericwa#419)

Bumps [idna](https://github.com/kjd/idna) from 3.6 to 3.7.
- [Release notes](https://github.com/kjd/idna/releases)
- [Changelog](https://github.com/kjd/idna/blob/master/HISTORY.rst)
- [Commits](kjd/idna@v3.6...v3.7)

---
updated-dependencies:
- dependency-name: idna
  dependency-type: indirect
...

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

docs/requirements.txt

@@ -15,14 +15,12 @@ certifi==2024.2.2
 charset-normalizer==3.3.2
     # via requests
 colorama==0.4.6
-    # via
-    #   sphinx
-    #   sphinx-autobuild
+    # via sphinx-autobuild
 docutils==0.20.1
     # via sphinx
 furo==2024.1.29
     # via -r requirements.in
-idna==3.6
+idna==3.7
     # via requests
 imagesize==1.4.1
     # via sphinx