Upgrade Go in CIPD to 1.7.5

BUG=skia:

Change-Id: I574c704a4c4bee90b26c1d73d17762ae8b8f55f6
Reviewed-on: https://skia-review.googlesource.com/9192
Commit-Queue: Joe Gregorio <jcgregorio@google.com>
Reviewed-by: Ravi Mistry <rmistry@google.com>
3 files changed