Bump version of go-github library to v43 (google#2307)

Bump version of go-github library to v42 (google#2253)

Bump version of go-github library to v41 (google#2211)

Bump version of go-github library to v40 (google#2199)

Add generate release notes support (google#2114)

Add BranchProtectionRuleEvent (google#2102)

Fixes: google#2098.

Bump version of go-github library to v39 (google#2087)

Fix GitHub docs links (google#2039)

Bump version of go-github library (google#2037)

Bump version of go-github library (google#1957)