Bump idna from 3.6 to 3.7 in /requirements

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>

requirements/docs.txt

@@ -124,9 +124,9 @@ gitpython==3.1.43 \
     --hash=sha256:35f314a9f878467f5453cc1fee295c3e18e52f1b99f10f6cf5b1682e968a9e7c \
     --hash=sha256:eec7ec56b92aad751f9912a73404bc02ba212a23adb2c7098ee668417051a1ff
     # via mkdocs-git-revision-date-plugin
-idna==3.6 \
-    --hash=sha256:9ecdbbd083b06798ae1e86adcbfe8ab1479cf864e4ee30fe4e46a003d12491ca \
-    --hash=sha256:c05567e9c24a6b9faaa835c4821bad0590fbb9d5779e7caa6e1cc4978e7eb24f
+idna==3.7 \
+    --hash=sha256:028ff3aadf0609c1fd278d8ea3089299412a7a8b9bd005dd08b9f8285bcb5cfc \
+    --hash=sha256:82fee1fc78add43492d3a1898bfa6d8a904cc97d8427f683ed8e798d07761aa0
     # via requests
 jinja2==3.1.3 \
     --hash=sha256:7d6d50dd97d52cbc355597bd845fabfbac3f551e1f99619e39a35ce8c370b5fa \
@@ -214,16 +214,16 @@ mkdocs==1.5.3 \
     --hash=sha256:3b3a78e736b31158d64dbb2f8ba29bd46a379d0c6e324c2246c3bc3d2189cfc1 \
     --hash=sha256:eb7c99214dcb945313ba30426c2451b735992c73c2e10838f76d09e39ff4d0e2
     # via
-    #   -r requirements/docs.in
+    #   -r docs.in
     #   mkdocs-git-revision-date-plugin
     #   mkdocs-material
 mkdocs-git-revision-date-plugin==0.3.2 \
     --hash=sha256:2e67956cb01823dd2418e2833f3623dee8604cdf223bddd005fe36226a56f6ef
-    # via -r requirements/docs.in
+    # via -r docs.in
 mkdocs-material==9.5.17 \
     --hash=sha256:06ae1275a72db1989cf6209de9e9ecdfbcfdbc24c58353877b2bb927dbe413e4 \
     --hash=sha256:14a2a60119a785e70e765dd033e6211367aca9fc70230e577c1cf6a326949571
-    # via -r requirements/docs.in
+    # via -r docs.in
 mkdocs-material-extensions==1.3.1 \
     --hash=sha256:10c9511cea88f568257f960358a467d12b970e1f7b2c0e5fb2bb48cab1928443 \
     --hash=sha256:adff8b62700b25cb77b53358dad940f3ef973dd6db797907c49e3c2ef3ab4e31