Update the requests package and some other dependencies

These updates are minor and do not require any code changes.
Huey and redis are not updated in this commit since they may
require more changes.

requirements.txt

@@ -1,10 +1,10 @@
-Django ~= 3.2.12
-git+https://github.com/apluslms/django-essentials.git@1.4.0#egg=django-essentials==1.4.0
-requests ~= 2.25.1
-PyYAML ~= 5.4.1
+Django ~= 3.2.13
+git+https://github.com/apluslms/django-essentials.git@1.5.0#egg=django-essentials==1.5.0
+requests >= 2.28.0, < 3
+PyYAML ~= 6.0.0
 docutils ~= 0.17.1
 huey ~= 2.3.2
 redis ~= 3.5.3
-pydantic ~= 1.8.2
-aplus-auth ~= 0.2.0
+pydantic ~= 1.9.1
+aplus-auth ~= 0.2.2
 requests-toolbelt ~= 0.9.1