Rename Credential Checker to Secret Scanner.
Review Request #11655 — Created June 12, 2021 and submitted
The Credential Checker used to be a fairly simple scanner for common
types of credentials, but has since expanded in scope a bit. To give the
tool a broader purpose, and to better align with terminology from other
tools on the market, we're renaming this to Secret Scanner.
Unit tests pass.
Re-installed the package and verified that
reviewbot workerpicked up
the new tool.