Update JaCoCo to v0.8.8

[cesarsotovalero]

I got the following test error when building from source:

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 T E S T S
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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:77)
        at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.base/java.lang.reflect.Method.invoke(Method.java:568)
        at java.instrument/sun.instrument.InstrumentationImpl.loadClassAndStartAgent(InstrumentationImpl.java:491)
        at java.instrument/sun.instrument.InstrumentationImpl.loadClassAndCallPremain(InstrumentationImpl.java:503)
Caused by: java.lang.RuntimeException: Class java/util/UUID could not be instrumented.
        at org.jacoco.agent.rt.internal_8ff85ea.core.runtime.ModifiedSystemClassRuntime.createFor(ModifiedSystemClassRuntime.java:140)
        at org.jacoco.agent.rt.internal_8ff85ea.core.runtime.ModifiedSystemClassRuntime.createFor(ModifiedSystemClassRuntime.java:101)
        at org.jacoco.agent.rt.internal_8ff85ea.PreMain.createRuntime(PreMain.java:55)
        at org.jacoco.agent.rt.internal_8ff85ea.PreMain.premain(PreMain.java:47)
        ... 6 more
Caused by: java.lang.NoSuchFieldException: $jacocoAccess
        at java.base/java.lang.Class.getField(Class.java:2117)
        at org.jacoco.agent.rt.internal_8ff85ea.core.runtime.ModifiedSystemClassRuntime.createFor(ModifiedSystemClassRuntime.java:138)
        ... 9 more
FATAL ERROR in native method

Updating JaCoCo to 0.8.8 solved this issue.

[radsz]

Hi,

Thank you for your PR.

Unfortunately, as explained in the Contribution section of README I can not accept it, unless you also make an explicit agreement to the requirements we have for any contributor.

Thank you for your understanding.

best,
Radek