chore(deps): update dependency com.google.code.gson:gson to v2.8.6 (#71)

Co-authored-by: WhiteSource Renovate <renovatebot@gmail.com>

Author: 2 people

build.gradle

@@ -96,7 +96,7 @@ if (project.hasProperty("signing.keyId")) {
 dependencies {
     compile group: 'org.bitcoinj', name: 'bitcoinj-core', version: '0.14.7'
     compile group: 'org.bouncycastle', name: 'bcprov-jdk15on', version: '1.62'
-    compile group: 'com.google.code.gson', name: 'gson', version: '2.8.0'
+    compile group: 'com.google.code.gson', name: 'gson', version: '2.8.6'
     compile 'com.google.guava:guava:28.0-jre'
 
     testImplementation 'org.junit.jupiter:junit-jupiter-api:5.5.0'