Bump app/version (#3566)

app/version/version.go

@@ -15,7 +15,7 @@ import (
 )
 
 // version a string since it is overwritten at build-time with the git tag for official releases.
-var version = "v1.2-dev"
+var version = "v1.3-rc"
 
 // Version is the branch version of the codebase.
 //   - Main branch: v0.X-dev
@@ -25,6 +25,7 @@ var Version, _ = Parse(version) // Error is caught in tests.
 // Supported returns the supported minor versions in order of precedence.
 func Supported() []SemVer {
 	return []SemVer{
+		{major: 1, minor: 3},
 		{major: 1, minor: 2},
 		{major: 1, minor: 1},
 		{major: 1, minor: 0},