deps: bump io.github.goooler.shadow from 8.1.7 to 8.1.8 (#10)

Bumps [io.github.goooler.shadow](https://github.com/Goooler/shadow) from 8.1.7 to 8.1.8.
- [Release notes](https://github.com/Goooler/shadow/releases)
- [Commits](https://github.com/Goooler/shadow/compare/v8.1.7...v8.1.8)

---
updated-dependencies:
- dependency-name: io.github.goooler.shadow
  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>

build.gradle

@@ -3,7 +3,7 @@ import org.apache.tools.ant.filters.ReplaceTokens
 plugins {
     id 'org.cadixdev.licenser' version '0.6.1' apply false
     id 'fabric-loom' version '1.7-SNAPSHOT' apply false
-    id 'io.github.goooler.shadow' version '8.1.7'
+    id 'io.github.goooler.shadow' version '8.1.8'
     id 'org.ajoberstar.grgit' version '5.2.2'
     id 'maven-publish'
     id 'java'