android: bump targetSdkVersion to 35, update dependencies

[agottardo]

No description provided.

[kari-ts]

Have you done testing to ensure we're supporting Android 15 behavior changes?

[agottardo]

Have you done testing to ensure we're supporting Android 15 behavior changes?

Yes, things seemed to work well. I still need to test Taildrop though.

[kari-ts]

Have you done testing to ensure we're supporting Android 15 behavior changes?

Yes, things seemed to work well. I still need to test Taildrop though.

Awesome! Thanks for doing this!

[barnstar]

You need to bump the build container version in the makefile so the builder regenerates the docker image with the new toolchains.

To keep the build reasonably fast, we don't regenerate the entire image on every build.

DOCKER_IMAGE=tailscale-android-build-amd64-191124

to

DOCKER_IMAGE=tailscale-android-build-amd64-160125

The last 6 digits are just the date.