build: Modify version notation of dependencies (#3)
build: Modify version notation of dependencies (#3)

Because current notation is Maven incompatible.

Before it's changed, Gradle shows following message:
> Maven publication 'maven' contains dependencies that will produce a pom file
> that cannot be consumed by a Maven client.
>   - com.google.http-client:google-http-client:1.19+ declared with a Maven
>     incompatible version notation
>   - info.vividcode.utils:wscutils:0.2.0+ declared with a Maven incompatible
>     version notation
nobuoka/vc-oauth-java,nobuoka/vc-oauth-java