Update Django to `3.2.16`

[changhsinlee]

Is your feature request related to a problem? Please describe.
I would like to update Django from 3.2.14 to 3.2.16 to patch CVEs

Describe the solution you'd like
I am thinking about making a PR like this one that last updated Django to 3.2.14:
#2706

Describe alternatives you've considered
N/A, but would like to know if there are other things to test besides running the test suite since I have not PR'd into label-studio before.

Additional context
3.2.15 fixes CVE-2022-36359
3.2.16 fixes CVE-2022-41323

[makseq]

@changhsinlee Waiting for your PR :-) !

[changhsinlee]

@makseq ^ looks like to build the PR it requires approval. Thanks

[wesleylima]

Merged 👍