Bump slf4j-jdk14 from 2.0.0-alpha7 to 2.0.0-beta1 (#874)

Bumps [slf4j-jdk14](https://github.com/qos-ch/slf4j) from 2.0.0-alpha7 to 2.0.0-beta1.
- [Release notes](https://github.com/qos-ch/slf4j/releases)
- [Commits](https://github.com/qos-ch/slf4j/compare/v_2.0.0-alpha7...v_2.0.0-beta1)

---
updated-dependencies:
- dependency-name: org.slf4j:slf4j-jdk14
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

core/pom.xml

@@ -85,7 +85,7 @@
         <dependency>
             <groupId>org.slf4j</groupId>
             <artifactId>slf4j-jdk14</artifactId>
-            <version>2.0.0-alpha7</version>
+            <version>2.0.0-beta1</version>
         </dependency>
 
         <!-- snakeyaml is present in Bungee, Spigot, Cauldron, so we could use this independent implementation -->