internal/cueversion: bump fallbackVersion for v0.9.0-alpha.3
Signed-off-by: Daniel Martí <mvdan@mvdan.cc>
Change-Id: I3954fa3ae2cdb1c27ede0c5ca7d686d147bef213
Reviewed-on: https://review.gerrithub.io/c/cue-lang/cue/+/1193754
Reviewed-by: Paul Jolly <paul@myitcv.io>
Unity-Result: CUE porcuepine <cue.porcuepine@gmail.com>
TryBot-Result: CUEcueckoo <cueckoo@cuelang.org>