[infra] Update recipes.cfg to use main branch
[infra] Update recipes.cfg to use main branch

Change-Id: Ia98ef545ccca55d98fdb81d27d93689f3b7748ae
Reviewed-on: https://skia-review.googlesource.com/c/buildbot/+/442396
Reviewed-by: Ravi Mistry <9fa2e7438b8cb730f96b74865492597170561628@google.com>
Commit-Queue: Eric Boren <0e499112533c8544f0505ea0d08394fb5ad7d8fa@google.com>

google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot