fix: upgrade org.slf4j:slf4j-api from 1.7.30 to 1.7.31 (#1455)

Snyk has created this PR to upgrade org.slf4j:slf4j-api from 1.7.30 to 1.7.31.

See this package in Maven Repository:
https://mvnrepository.com/artifact/org.slf4j/slf4j-api/

See this project in Snyk:
https://app.snyk.io/org/openfeign/project/6309b111-62fe-4264-b0a2-59382bf8eea7?utm_source=github&utm_medium=upgrade-pr

pom.xml

@@ -77,7 +77,7 @@
     <guava.version>30.1.1-jre</guava.version>
     <googlehttpclient.version>1.39.2</googlehttpclient.version>
     <gson.version>2.8.7</gson.version>
-    <slf4j.version>1.7.30</slf4j.version>
+    <slf4j.version>1.7.31</slf4j.version>
     <bouncy.version>1.60</bouncy.version>
     <json.version>20210307</json.version>