feat: upgrade org.slf4j:slf4j-api from 1.7.25 to 2.0.15

Snyk has created this PR to upgrade org.slf4j:slf4j-api from 1.7.25 to 2.0.15.

See this package in maven:
org.slf4j:slf4j-api

See this project in Snyk:
https://app.snyk.io/org/taeb3/project/b6bec497-6439-44e3-81a4-281d284fc788?utm_source=github&utm_medium=referral&page=upgrade-pr

java/examples/pom.xml

@@ -91,7 +91,7 @@
         <dependency>
             <groupId>org.slf4j</groupId>
             <artifactId>slf4j-api</artifactId>
-            <version>1.7.25</version>
+            <version>2.0.15</version>
         </dependency>
         <dependency>
             <groupId>com.vesoft</groupId>