Bump org.slf4j:slf4j-api in /examples/fabric-contract-example-maven (#398)

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examples/fabric-contract-example-maven/pom.xml

@@ -16,7 +16,7 @@
 
 		<!-- Logging -->
 		<logback.version>1.5.18</logback.version>
-		<slf4j.version>1.7.5</slf4j.version>
+		<slf4j.version>2.0.17</slf4j.version>
 
 		<!-- Test -->
 		<junit.jupiter.version>5.13.4</junit.jupiter.version>