Ignore Invalid Versions

[rleibman]

I get the following:
[info] com.google.apis:google-api-services-calendar : v3-rev411-1.25.0 -> InvalidVersion(v3-rev99-1.19.0)
Somebody at some point in the google thing created a v3-rev99 version, for some reason, dependencyUpdates thinks that this invalid version is higher than the current version, so I can't tell what the actual latest version is (yeah, argue with google about not using semver, but still, it does say "InvalidVersion").

[rtimush]

The reason was that both versions were considered invalid, and in this case no "smart" comparison logic were applied. I updated the code to allow such versions.

[rleibman]

Thanks for addressing this!