Bump asgiref from 3.6.0 to 3.7.2 in /requirements (#489)

Bumps [asgiref](https://github.com/django/asgiref) from 3.6.0 to 3.7.2.
- [Changelog](https://github.com/django/asgiref/blob/main/CHANGELOG.txt)
- [Commits](django/asgiref@3.6.0...3.7.2)

---
updated-dependencies:
- dependency-name: asgiref
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

requirements/dev.txt

@@ -6,7 +6,7 @@
 #
 alabaster==0.7.12
     # via sphinx
-asgiref==3.6.0
+asgiref==3.7.2
     # via -r tests.in
 babel==2.10.3
     # via sphinx

requirements/tests.txt

@@ -4,7 +4,7 @@
 #
 #    pip-compile tests.in
 #
-asgiref==3.6.0
+asgiref==3.7.2
     # via -r tests.in
 cachelib==0.10.2
     # via -r tests.in