Add a test showing the problems we ran into when upgrading from
gocloud.dev 0.27.0 to 0.28.0 and 0.29.0. It's a little bit awkward,
since the issue only happens when upgrading form an encrypted key
generated with the old version of gocloud.dev to a newer version of
gocloud.dev.
Fixes https://github.com/pulumi/pulumi/issues/11986
---------
Co-authored-by: Thomas Gummerer <t.gummerer@gmail.com>