fix: update tensorflow-addons to match tensorflow version

[ianardee]

Avoid this error message:

site-packages/tensorflow_addons/utils/ensure_tf_install.py:53: UserWarning:
Tensorflow Addons supports using Python ops for all Tensorflow versions above or equal to 2.5.0 and strictly below 2.8.0 (nightly versions are not supported). 
 The versions of TensorFlow you are currently using is 2.9.1 and is not supported. 
Some things might work, some things might not

[codecov]

Codecov Report

Merging #998 (838a6cb) into main (23d1a1e) will increase coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main     #998      +/-   ##
==========================================
+ Coverage   94.85%   94.87%   +0.01%     
==========================================
  Files         134      134              
  Lines        5558     5558              
==========================================
+ Hits         5272     5273       +1     
+ Misses        286      285       -1     

Flag	Coverage Δ
unittests	94.87% <ø> (+0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
doctr/transforms/modules/base.py	94.59% <0.00%> (ø)
doctr/transforms/functional/base.py	97.10% <0.00%> (+1.44%)	⬆️

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[charlesmindee]

Thanks, LGTM

[github-actions]

Hey @charlesmindee 👋
You merged this PR, but it is not correctly labeled. The list of valid labels is available at https://github.com/mindee/doctr/blob/main/.github/verify_pr_labels.py