Update jacoco to work with Java 17

Author: Dave Syer

pom.xml

@@ -23,7 +23,7 @@
     <webjars-bootstrap.version>5.1.3</webjars-bootstrap.version>
     <webjars-font-awesome.version>4.7.0</webjars-font-awesome.version>
 
-    <jacoco.version>0.8.5</jacoco.version>
+    <jacoco.version>0.8.7</jacoco.version>
     <nohttp-checkstyle.version>0.0.10</nohttp-checkstyle.version>
     <spring-format.version>0.0.31</spring-format.version>