[CI] Use ninja targets instead of calling binaries
Summary:
There is no change in behavior.
Test Plan:
Run the CI builds:
- build-asan
- build-ubsan
- build-tsan
- build-diff
- build-master
Reviewers: #bitcoin_abc, deadalnix, jasonbcox
Reviewed By: #bitcoin_abc, deadalnix, jasonbcox
Differential Revision: https://reviews.bitcoinabc.org/D4927