internal/cueversion: bump fallbackVersion for v0.9.0-alpha.1

Signed-off-by: Daniel Martí <mvdan@mvdan.cc>
Change-Id: I0dd1cf92abe9a38f93ec3ba4c794958550877e64
Reviewed-on: https://review.gerrithub.io/c/cue-lang/cue/+/1185689
Reviewed-by: Paul Jolly <paul@myitcv.io>
Unity-Result: CUE porcuepine <cue.porcuepine@gmail.com>
TryBot-Result: CUEcueckoo <cueckoo@gmail.com>

internal/cueversion/version.go

@@ -16,7 +16,7 @@ import (
 //
 // TODO: remove once Go stamps local builds with a main module version
 // derived from the local VCS information per https://go.dev/issue/50603.
-const fallbackVersion = "v0.9.0-0.dev"
+const fallbackVersion = "v0.9.0-alpha.1"
 
 // Version returns the version of the cuelang.org/go module as best as can
 // reasonably be determined. The result is always a valid Go semver version.