Excavator: Upgrade dependencies (#1279)

Author: svc-excavator-bot

versions.props

@@ -4,7 +4,7 @@ org.immutables:* = 2.12.0
 com.palantir.safe-logging:* = 3.9.0
 com.google.code.findbugs:jsr305 = 3.0.2
 com.google.guava:guava = 33.5.0-jre
-com.uber.nullaway:nullaway = 0.12.14
+com.uber.nullaway:nullaway = 0.12.15
 
 # Test dependencies
 org.assertj:assertj-core = 3.27.6