Greengrass IPC deadlock fix

What's Changed

• Doc: Fix AWS secret access key variable in doc by @alfred2g in #623
• Doc: Update Cognito sample Readme to add permissions by @alfred2g in #624
• Bump aws-c-iot version by @sfod in #626
• Stop checking CMAKE_BUILD_TYPE in CMake scripts by @graebm in #628
• Shared Library for greengrass ipc by @sbSteveK in #620
• Disable the Pkcs12 test by @bretambrose in #635
• Fix deadlock in destruction of Eventstream Client by @sbSteveK in #632
• AutoTag PR for v1.29.1 by @bretambrose in #638

New Contributors

• @alfred2g made their first contribution in #623
• @sfod made their first contribution in #626

Full Changelog: v1.29.0...v1.29.1