fix(deps): update dependency org.slf4j:slf4j-api to v2.0.9 (#1228)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [org.slf4j:slf4j-api](http://www.slf4j.org) ([source](https://togithub.com/qos-ch/slf4j)) | `2.0.7` -> `2.0.9` | [![age](https://developer.mend.io/api/mc/badges/age/maven/org.slf4j:slf4j-api/2.0.9?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://developer.mend.io/api/mc/badges/adoption/maven/org.slf4j:slf4j-api/2.0.9?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://developer.mend.io/api/mc/badges/compatibility/maven/org.slf4j:slf4j-api/2.0.7/2.0.9?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://developer.mend.io/api/mc/badges/confidence/maven/org.slf4j:slf4j-api/2.0.7/2.0.9?slim=true)](https://docs.renovatebot.com/merge-confidence/) |

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Author: renovate-bot

appengine-standard-java8/kotlin-spark-appengine-standard/pom.xml

@@ -114,7 +114,7 @@ limitations under the License.
     <dependency>
       <groupId>org.slf4j</groupId>
       <artifactId>slf4j-api</artifactId>
-      <version>2.0.7</version> <!-- TEST if not 1.7.25 -->
+      <version>2.0.9</version> <!-- TEST if not 1.7.25 -->
     </dependency>
   </dependencies>