[switchboard] Switch S20s over to arm64 RPis.

Bug: skia:12063
Change-Id: I47257179d38de0452766ce70857eaf0a920b7abc
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/434156
Commit-Queue: Joe Gregorio <jcgregorio@google.com>
Commit-Queue: Eric Boren <borenet@google.com>
Auto-Submit: Joe Gregorio <jcgregorio@google.com>
Reviewed-by: Eric Boren <borenet@google.com>
(cherry picked from commit f1f542cde8a8fc86842e1f0901123127ab77e774)
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/434341
2 files changed