release: address maven-javadoc-plugin issues

maven-javadoc-plugin started failing:
```
Error: ROR] Failed to execute goal org.apache.maven.plugins:maven-javadoc-plugin:3.11.3:jar (attach-javadocs) on project scylla-driver-core: MavenReportException: Error while generating Javadoc:
Error: ROR] Exit code: 1
Error: ROR] javadoc: warning - The code being documented uses modules but the packages defined in https://javadoc.io/doc/javax/javaee-api/8.0/ are in the unnamed module.
Error:     [ERROR] javadoc: error - Error fetching URL: https://javaee-spec.java.net/nonav/javadocs/
Error: ROR] javadoc: warning - The code being documented uses modules but the packages defined in https://docs.oracle.com/javase/8/docs/api/ are in the unnamed module.
Error: ROR] javadoc: warning - The code being documented uses modules but the packages defined in https://docs.oracle.com/javase/8/docs/api/ are in the unnamed module.
```

Author: dkropachev

pom.xml

@@ -542,14 +542,15 @@
                         <quiet>true</quiet>
                         <verbose>false</verbose>
                         <additionalparam>${javadoc.opts}</additionalparam>
+                        <detectJavaApiLink>true</detectJavaApiLink>
                         <links>
-                            <link>https://docs.oracle.com/javase/8/docs/api/</link>
+                            <link>https://javadoc.io/doc/javax/javaee-api/8.0/</link>
                             <link>https://google.github.io/guava/releases/19.0/api/docs/</link>
                             <link>http://netty.io/4.0/api/</link>
                             <link>http://www.joda.org/joda-time/apidocs/</link>
                             <link>http://fasterxml.github.io/jackson-core/javadoc/2.8/</link>
                             <link>http://fasterxml.github.io/jackson-databind/javadoc/2.7/</link>
-                            <link>https://javaee-spec.java.net/nonav/javadocs/</link>
+                            <link>https://jakarta.ee/specifications/platform/8/apidocs/</link>
                         </links>
                         <!-- optional dependencies from other modules (must be explicitly declared here in order to be correctly resolved) -->
                         <additionalDependencies>