Bump com.gradleup.shadow:shadow-gradle-plugin from 9.3.0 to 9.3.1 (#237)

Bumps [com.gradleup.shadow:shadow-gradle-plugin](https://github.com/GradleUp/shadow) from 9.3.0 to 9.3.1.
- [Release notes](https://github.com/GradleUp/shadow/releases)
- [Commits](GradleUp/shadow@9.3.0...9.3.1)

---
updated-dependencies:
- dependency-name: com.gradleup.shadow:shadow-gradle-plugin
  dependency-version: 9.3.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

build.gradle

@@ -14,7 +14,7 @@ buildscript {
     }
 
     dependencies {
-        classpath "com.gradleup.shadow:shadow-gradle-plugin:9.3.0"
+        classpath "com.gradleup.shadow:shadow-gradle-plugin:9.3.1"
         classpath "net.minecraftforge.gradle:ForgeGradle:[6.0.36,6.2)"
         classpath "org.spongepowered:mixingradle:0.7-SNAPSHOT"
         classpath "xyz.wagyourtail.jvmdowngrader:gradle-plugin:1.3.5"