repository url blocked on latest maven

running mvn clean gem:initialize I was hitting errors like:

[ERROR] Failed to execute goal on project dummy: Could not resolve dependencies for project rubygems:dummy:jar:testing: Failed to collect dependencies at rubygems:rails:gem:2.3.5: Failed to read artifact descriptor for rubygems:rails:gem:2.3.5: Could not transfer artifact rubygems:rails:pom:2.3.5 from/to maven-default-http-blocker (http://0.0.0.0/): Blocked mirror for repositories: [rubygems-proxy (http://rubygems-proxy.torquebox.org/releases, default, releases)] -> [Help 1]

I was able to find this stack overflow post which explained that the repository URL of http://rubygems-proxy.torquebox.org/releases is automatically blocked by maven versions >= 3.8.1

As a workaround, I switched my project to use mvnw with .mvn/wrapper/maven-wrapper.properties using

distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.6.3/apache-maven-3.6.3-bin.zip

but it would be great if rubygems-proxy.torquebox.org could use HTTPS and a valid certificate. When I tried to just specify

        <repository>
            <id>rubygems-release</id>
            <url>https://rubygems-proxy.torquebox.org/releases</url> <!-- note the "httpS" -->
        </repository>

I hit:

[ERROR] Failed to execute goal on project dummy: Could not resolve dependencies for project rubygems:dummy:jar:testing: Failed to collect dependencies at rubygems:rails:gem:2.3.5: Failed to read artifact descriptor for rubygems:rails:gem:2.3.5: Could not transfer artifact rubygems:rails:pom:2.3.5 from/to rubygems-proxy (https://rubygems-proxy.torquebox.org/releases): transfer failed for https://rubygems-proxy.torquebox.org/releases/rubygems/rails/2.3.5/rails-2.3.5.pom: Certificate for <rubygems-proxy.torquebox.org> doesn't match any of the subject alternative names: [*.ceylon-lang.org, ceylon-lang.org] -> [Help 1]