Mbedtls update

[disa6302]

Issue #, if available:

What was changed?

• Update mbedtls version to fix build error with clang
• Add CI

Why was it changed?

• With the older mbedtls version, the build on mac failed with the following error:

kvs-sdk/amazon-kinesis-video-streams-webrtc-sdk-c/open-source/libmbedtls/build/src/project_libmbedtls/library/psa_crypto.c:4590:12: error: parameter 'output_size' set but not used [-Werror,-Wunused-but-set-parameter]
    size_t output_size,
           ^
1 error generated.

This error was fixed in 2.28.5.

How was it changed?

• Changed version in the cmake build file.

What testing was done for the changes?

• Added a CI job to confirm the build passes
• Confirm the samples run

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 76.09%. Comparing base (7e4c503) to head (f74ce12).

❗ Current head f74ce12 differs from pull request most recent head efca161. Consider uploading reports for the commit efca161 to get more accurate results

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #1939      +/-   ##
===========================================
- Coverage    76.12%   76.09%   -0.04%     
===========================================
  Files           48       48              
  Lines        13711    13710       -1     
===========================================
- Hits         10437    10432       -5     
- Misses        3274     3278       +4     

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[hassanctech]

lgtm

[niyatim23]

Nice!