Update JaCoCo Maven plugin (0.8.1 -> 0.8.2)
Update JaCoCo Maven plugin (0.8.1 -> 0.8.2)

This update is needed in order to build with Java 11. JaCoCo 0.8.2
has experimental support for Java 11 and 12 among other features.

Without this update the maven-surefire plugin will fail since test
are executed with JaCoCo agent:

```
Exception in thread "main" java.lang.reflect.InvocationTargetException
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:566)
	at java.instrument/sun.instrument.InstrumentationImpl.loadClassAndStartAgent(InstrumentationImpl.java:513)
	at java.instrument/sun.instrument.InstrumentationImpl.loadClassAndCallPremain(InstrumentationImpl.java:525)
Caused by: java.lang.RuntimeException: Class java/lang/UnknownError could not be instrumented.
	at org.jacoco.agent.rt.internal_c13123e.core.runtime.ModifiedSystemClassRuntime.createFor(ModifiedSystemClassRuntime.java:140)
	at org.jacoco.agent.rt.internal_c13123e.core.runtime.ModifiedSystemClassRuntime.createFor(ModifiedSystemClassRuntime.java:101)
	at org.jacoco.agent.rt.internal_c13123e.PreMain.createRuntime(PreMain.java:55)
	at org.jacoco.agent.rt.internal_c13123e.PreMain.premain(PreMain.java:47)
	... 6 more
Caused by: java.lang.NoSuchFieldException: $jacocoAccess
	at java.base/java.lang.Class.getField(Class.java:1999)
	at org.jacoco.agent.rt.internal_c13123e.core.runtime.ModifiedSystemClassRuntime.createFor(ModifiedSystemClassRuntime.java:138)
	... 9 more
```

saeg/ba-dua