af-main: bump to latest revision

af-main: bump to latest revision

Includes changes:
* 46e35ce Revert "afm-unit: Restore removal of capabilities"
* 765d080 wgtpkg-unit: Fix Segmentation fault
* d0cb2a7 wgtpkg-pack: Ensure packing relative files
* 48e894b wgtpkg-zip: Ensure zip will not complain
* 9f24684 afm-user-setup service: disable start rate limit
* da0ec3a Revert "afm-unit: add autoapi in required-api feature"
* adc590a Fixed book.yml file
* 2b6e13b afm-unit: add autoapi in required-api feature
* f2a2f13 afm-unit: Restore removal of capabilities

Bug-AGL: SPEC-1988, SPEC-2006, SPEC-2144

Change-Id: I5d425f95d31b46991c952d8be976f8c843e7714d
Signed-off-by: Stephane Desneux <stephane.desneux@iot.bzh>