[infra] Switch from isolate to RBE-CAS

Bug: skia:10883
Change-Id: Ief129fe8c8dfdda6bb345578f21bcf800249ade2
Reviewed-on: https://skia-review.googlesource.com/c/lottie-ci/+/340845
Commit-Queue: Eric Boren <borenet@google.com>
Reviewed-by: Weston Tracey <westont@google.com>
6 files changed
tree: 2717233b05790c44ba16dbecbf6edadd8af198de
  1. .gitignore
  2. DEPS
  3. go.mod
  4. go.sum
  5. infra/