Really upgrade spotbugs

[kgyrtkirk]

We are using spotbugs maven plugin 4.9.3 ; which would load 4.9.3 automatically but the pom.xml explicitly uses 4.8.6 for some reason

it would be great to remove the explicit 4.8.6 load and just use the 4.9.3 ; but there are some spotbugs issue underneath....

druid/pom.xml

Lines 1582 to 1592 in 142d319

	<groupId>com.github.spotbugs</groupId>
	<artifactId>spotbugs-maven-plugin</artifactId>
	<version>4.9.3.2</version>
	<dependencies>
	<!-- overwrite dependency on spotbugs if you want to specify the version of spotbugs -->
	<dependency>
	<groupId>com.github.spotbugs</groupId>
	<artifactId>spotbugs</artifactId>
	<version>4.8.6</version>
	</dependency>
	</dependencies>