ci: Temporarily allow android examples job to fail

The JCenter Maven repository is being shut down:

https://testfairy.com/blog/jcenter-and-bintray-is-shutting-down-what-to-do/

and the job fails to fetch packages now:

https://gitlab.freedesktop.org/gstreamer/cerbero/-/jobs/17541398

Disable it till someone who knows how to fix it can fix it, filed
cerbero#357 about
that.

Part-of: <!421>
39 jobs for 1.18 in 42 seconds (queued for 9 seconds)
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