Excavator: Upgrade dependencies (#355)

versions.lock

@@ -36,7 +36,7 @@ org.glassfish.jersey.core:jersey-client:2.25.1 (2 constraints: dc34f938)
 org.glassfish.jersey.core:jersey-common:2.25.1 (7 constraints: 0a90843b)
 org.glassfish.jersey.core:jersey-server:2.25.1 (7 constraints: be97cc2a)
 org.glassfish.jersey.media:jersey-media-jaxb:2.25.1 (1 constraints: 3311f9d4)
-org.immutables:value:2.8.1 (1 constraints: 0d050e36)
+org.immutables:value:2.8.2 (1 constraints: 0e050f36)
 org.javassist:javassist:3.22.0-GA (2 constraints: f61d2fc1)
 org.jboss.logging:jboss-logging:3.3.2.Final (2 constraints: 7a1edc7a)
 org.jboss.xnio:xnio-api:3.3.8.Final (2 constraints: 6f1a4d45)

versions.props

@@ -19,7 +19,7 @@ com.palantir.conjure.java.runtime:* = 4.19.0
 junit:junit = 4.12
 org.assertj:assertj-core = 3.14.0
 org.hamcrest:hamcrest-* = 1.3
-org.immutables:value = 2.8.1
+org.immutables:value = 2.8.2
 org.openjdk.jmh:* = 1.22
 org.jmock:jmock = 2.12.0
 org.mockito:mockito-core = 3.1.0