Update dependency org.slf4j:slf4j-api to v2.0.18

Author: renovate[bot]

gradle/libs.versions.toml

@@ -6,7 +6,7 @@ bouncycastle = "1.84"
 expectit = "0.9.0"
 commonsIo = "2.17.0"
 rundeckCore = "6.0.0-alpha1-20260407"
-slf4j = "2.0.17"
+slf4j = "2.0.18"
 junit = "4.13.2"
 groovy = "4.0.31"
 spock = "2.4-groovy-4.0"