Connectors version is reported incorrectly

[jeqo]

Kafka Connector plugins report the Apache Kafka Connect Framework versions instead of their own:

java-pubsub-group-kafka-connector/src/main/java/com/google/pubsub/kafka/sink/CloudPubSubSinkConnector.java

Lines 114 to 117 in 435cd98

	@Override
	public String version() {
	return AppInfoParser.getVersion();
	}

Then GET /connector-plugins endpoint reports e.g. 3.3.2 instead of 1.0.0

See

• https://github.com/aiven/jdbc-connector-for-apache-kafka/blob/bcdf2a24f0b7efeb3a1500999fc04b073329c07d/src/main/java/io/aiven/connect/jdbc/JdbcSinkConnector.java#L75-L78
• https://github.com/aiven/jdbc-connector-for-apache-kafka/blob/bcdf2a24f0b7efeb3a1500999fc04b073329c07d/src/main/java/io/aiven/connect/jdbc/util/Version.java

for an example on how to get version from repository.