srtp_get_session_keys, which is used by both srtp_unprotect_mki and
srtp_unprotect_rtcp_mki, determines the tag len from rtp_auth.

This fails when rtp_auth differ from rtcp_auth. E.g. when SRTP is used
with weak authentication but SRTCP must not (RFC 3711).

This commit splits the function in two:
srtp_get_session_keys_rtp
srtp_get_session_keys_rtcp

And adds a short auth policy test to test/srtp_driver.

At least on OSX this is now required in order get the mbedcrypto library on the link line.

I ma not sure what has changed but testing shows this to fix the issue.

#700

(cherry picked from commit 981d695)

explicitly look for mbedcrypto dependency

Fix srtp_unprotect_rtcp_mki when RTP auth != RTCP

 - The definition for the function has the signature:
   `srtp_err_status_t srtp_remove_stream(srtp_t session, uint32_t ssrc)`
 - This is not always same as the signature present in srtp.h:
   `srtp_err_status_t srtp_remove_stream(srtp_t session, unsigned int ssrc)`

This causes function signature mismatch.
Aligned the signature from `srtp.h` with the definition using `uint32_t`

Git hub is moving to ubuntu-latest on GitHub is moving
to 24.04 and there re issues installing clang-format-12 .

(cherry picked from commit 2a6c15d)

update formatting scripts to  clang-format-14

update upload-artifact version in cifuzz task

…gnature

Fix function signature mismatch for `srtp_remove_stream`