Bump slf4j-api from 2.0.0-alpha2 to 2.0.0-alpha4

Bumps [slf4j-api](https://github.com/qos-ch/slf4j) from 2.0.0-alpha2 to 2.0.0-alpha4.
- [Release notes](https://github.com/qos-ch/slf4j/releases)
- [Commits](https://github.com/qos-ch/slf4j/commits/v_2.0.0-alpha4)

---
updated-dependencies:
- dependency-name: org.slf4j:slf4j-api
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

build.gradle

@@ -178,7 +178,7 @@ dependencies {
     implementation 'org.jsoup:jsoup:1.14.1'
     implementation 'com.konghq:unirest-java:3.11.12'
 
-    implementation 'org.slf4j:slf4j-api:2.0.0-alpha2'
+    implementation 'org.slf4j:slf4j-api:2.0.0-alpha4'
     implementation group: 'org.apache.logging.log4j', name: 'log4j-jcl', version: '3.0.0-SNAPSHOT'
     implementation group: 'org.apache.logging.log4j', name: 'log4j-slf4j18-impl', version: '3.0.0-SNAPSHOT'
     implementation group: 'org.apache.logging.log4j', name: 'log4j-plugins', version: '3.0.0-SNAPSHOT'