Merge branch 'upgrade-jackson-2.9.8' into 'master'

Upgrade Jackson to 2.9.8

See merge request !1031

briar-headless/build.gradle

@@ -16,7 +16,7 @@ dependencies {
 
 	implementation 'io.javalin:javalin:2.4.0'
 	implementation 'org.slf4j:slf4j-simple:1.7.25'
-	implementation 'com.fasterxml.jackson.core:jackson-databind:2.9.7'
+	implementation 'com.fasterxml.jackson.core:jackson-databind:2.9.8'
 	implementation 'com.github.ajalt:clikt:1.5.0'
 
 	kapt 'com.google.dagger:dagger-compiler:2.19'

briar-headless/witness.gradle

 dependencyVerification {
     verify = [
         'com.fasterxml.jackson.core:jackson-annotations:2.9.0:jackson-annotations-2.9.0.jar:45d32ac61ef8a744b464c54c2b3414be571016dd46bfc2bec226761cf7ae457a',
-        'com.fasterxml.jackson.core:jackson-core:2.9.7:jackson-core-2.9.7.jar:9e5bc0efabd9f0cac5c1fdd9ae35b16332ed22a0ee19a356de370a18a8cb6c84',
-        'com.fasterxml.jackson.core:jackson-databind:2.9.7:jackson-databind-2.9.7.jar:675376decfc070b039d2be773a97002f1ee1e1346d95bd99feee0d56683a92bf',
+        'com.fasterxml.jackson.core:jackson-core:2.9.8:jackson-core-2.9.8.jar:d934dab0bd48994eeea2c1b493cb547158a338a80b58c4fbc8e85fb0905e105f',
+        'com.fasterxml.jackson.core:jackson-databind:2.9.8:jackson-databind-2.9.8.jar:2351c3eba73a545db9079f5d6d768347ad72666537362c8220fe3e950a55a864',
         'com.github.ajalt:clikt:1.5.0:clikt-1.5.0.jar:f13ab614cb0372229f6bb1e19aa98ee6f4ac96f253d0e72d482ee4f5fd2a13a9',
         'com.google.code.findbugs:jsr305:1.3.9:jsr305-1.3.9.jar:905721a0eea90a81534abb7ee6ef4ea2e5e645fa1def0a5cd88402df1b46c9ed',
         'com.google.dagger:dagger-compiler:2.19:dagger-compiler-2.19.jar:27a4b202a2de908182edb261f8c0a264e08e5e4733d7514bc7fbf0d31da5c0fc',