Bump afb-helpers version

Bump afb-helpers version

* 5c05223 - Use C++11 standard by default
* 1eb7fc7 - Set PROJECT_VERSION overwritable by cli
* f5bb1d7 - Moved Qt's automoc and autorcc variables
* a946245 - book.yml: needed for new doc workflow
* 8876fa0 - Fix gitreview file
* 9bcc943 - Set PROJECT_VERSION overwritable by cli
* b7e6dbe - Add functions reference documentation
* 2e36a74 - Call the freeCB function a manual timer stop call
* aba89b5 - Little code cleaning.
* a1976ff - Adding packaging files

Change-Id: I94b41f5656cfe81f808c0de46d0553a0a6690d51
Signed-off-by: Romain Forlot <romain.forlot@iot.bzh>