build(deps): bump com.gradleup.shadow from 8.3.0 to 8.3.1 (#269)

Bumps [com.gradleup.shadow](https://github.com/GradleUp/shadow) from 8.3.0 to 8.3.1.
- [Release notes](https://github.com/GradleUp/shadow/releases)
- [Commits](GradleUp/shadow@8.3.0...8.3.1)

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

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

imgui-app/build.gradle

@@ -1,6 +1,6 @@
 plugins {
     id 'java-library'
-    id 'com.gradleup.shadow' version '8.3.0'
+    id 'com.gradleup.shadow' version '8.3.1'
     id 'checkstyle'
     id 'maven-publish'
     id 'signing'