Merge pull request #472 from graphql-java-kickstart/renovate/major-lib_slf4j_ver

fix(deps): update lib_slf4j_ver to v2 (major)

Author: oliemansm

gradle.properties

@@ -9,7 +9,7 @@ PROJECT_DEV_ID=oliemansm
 PROJECT_DEV_NAME=Michiel Oliemans
 LIB_GRAPHQL_JAVA_VER=19.1
 LIB_JACKSON_VER=2.13.3
-LIB_SLF4J_VER=1.7.36
+LIB_SLF4J_VER=2.0.0
 LIB_LOMBOK_VER=1.18.24
 SOURCE_COMPATIBILITY=1.8
 TARGET_COMPATIBILITY=1.8