Update aws-crt-cpp to v0.13.6
Update aws-crt-cpp to v0.13.6 to bring up the following:
BUGFIX
- Don't run aws-lc's codegen at build time, it just introduces complexity.
- Some characters were not correctly URI-encoded
- Fix crash when peer hangs up immediately following first non-TLS write.
- Fix issue where TLS context initialization could fail on linux due to passing in buffers that weren't properly zero-terminated at their final length.
- OpenSSL libcrypto.a detection fixes
Optimization
- Only using extra warning and werror flags on Debug build type
- Add support to store and pass SDK Name & Version as a metric to IoT cloud