autobot: Fine tune with configuration

Latest version of `autobot` supports configuration to control the
target component version, frequency of updates etc. This commit updates
`developer-tools` version which brings in the latest `autobot` version.

Provide default configuration for `autotbot` which will be applied to
all the components. Below components needs special handling in autobot:

* `trusted-firmware-m` and `mbedtls` are set to update only to tags on
LTS  branch, as update to DEFAULT branch often result in failure.
* `project_options` is set to update maximum once a week to avoid too
frequent updates to save CI resources.

Signed-off-by: Saheer Babu <saheer.babu@arm.com>