Excavator: Upgrade dependencies

versions.lock

@@ -3,19 +3,18 @@
 [Test dependencies]
 cglib:cglib-nodep:3.2.2 (1 constraints: 490ded24)
 com.google.code.findbugs:jsr305:3.0.2 (2 constraints: 1d0fb186)
-com.google.errorprone:error_prone_annotations:2.4.0 (2 constraints: 1d0fd486)
+com.google.errorprone:error_prone_annotations:2.4.0 (2 constraints: 220fdb86)
 com.google.guava:failureaccess:1.0.1 (1 constraints: 140ae1b4)
-com.google.guava:guava:27.0.1-jre (2 constraints: c7135868)
+com.google.guava:guava:30.1-jre (2 constraints: 6313994d)
 com.google.guava:listenablefuture:9999.0-empty-to-avoid-conflict-with-guava (1 constraints: bd17c918)
-com.google.j2objc:j2objc-annotations:1.1 (1 constraints: b609eba0)
-com.netflix.nebula:nebula-test:7.8.6 (1 constraints: 17052c36)
+com.google.j2objc:j2objc-annotations:1.3 (1 constraints: b809eda0)
+com.netflix.nebula:nebula-test:7.9.4 (1 constraints: 16052d36)
 com.squareup.okhttp3:mockwebserver:3.14.1 (1 constraints: 3b05423b)
 com.squareup.okhttp3:okhttp:3.14.1 (1 constraints: 680fa37c)
 com.squareup.okio:okio:1.17.2 (1 constraints: 850cc309)
 commons-io:commons-io:2.5 (1 constraints: eb0c8d0a)
 junit:junit:4.12 (2 constraints: 0c1c0d9c)
-org.checkerframework:checker-qual:2.5.3 (2 constraints: 260f6187)
-org.codehaus.mojo:animal-sniffer-annotations:1.17 (1 constraints: ed09d8aa)
+org.checkerframework:checker-qual:3.5.0 (2 constraints: 250f6487)
 org.hamcrest:hamcrest-core:1.3 (1 constraints: cc05fe3f)
 org.objenesis:objenesis:2.4 (1 constraints: ea0c8c0a)
 org.spockframework:spock-core:1.3-groovy-2.4 (1 constraints: 7c10f3af)

versions.props

@@ -1,5 +1,5 @@
-com.google.guava:guava = 27.0.1-jre
-com.netflix.nebula:nebula-test = 7.8.6
+com.google.guava:guava = 30.1-jre
+com.netflix.nebula:nebula-test = 7.9.4
 com.squareup.okhttp3:* = 3.14.1
 
 # conflict resolution