Update github.com/pion/rtp to v2

[at-wat]

Bump major version.

Reference issue

pion/rtp#90

[codecov]

Codecov Report

Merging #154 (6b4e416) into master (7323459) will increase coverage by 0.09%.
The diff coverage is 80.00%.

@@            Coverage Diff             @@
##           master     #154      +/-   ##
==========================================
+ Coverage   75.46%   75.56%   +0.09%     
==========================================
  Files          16       16              
  Lines         754      757       +3     
==========================================
+ Hits          569      572       +3     
  Misses        103      103              
  Partials       82       82              

Flag	Coverage Δ
go	75.56% <80.00%> (+0.09%)	⬆️
wasm	75.03% <80.00%> (+0.09%)	⬆️

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

Impacted Files	Coverage Δ
session_srtp.go	74.41% <66.66%> (+0.30%)	⬆️
srtp.go	86.20% <71.42%> (+1.02%)	⬆️
srtp_cipher_aead_aes_gcm.go	70.73% <100.00%> (ø)
srtp_cipher_aes_cm_hmac_sha1.go	62.63% <100.00%> (ø)
stream_srtp.go	72.22% <100.00%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 7323459...6b4e416. Read the comment docs.

[Sean-Der]

Nice work!