Bump fabric-loom from 1.7.3 to 1.8.6

Bumps fabric-loom from 1.7.3 to 1.8.6.

---
updated-dependencies:
- dependency-name: fabric-loom
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

gradle/libs.versions.toml

@@ -16,7 +16,7 @@ assertj-core = { module = "org.assertj:assertj-core", version = "3.26.3" }
 mockito-core = { module = "org.mockito:mockito-core", version = "5.13.0" }
 
 [plugins]
-fabric-loom = { id = "fabric-loom", version = "1.7.3" }
+fabric-loom = { id = "fabric-loom", version = "1.8.6" }
 lombok = { id = "io.freefair.lombok", version = "8.10"}
 shadow = { id = "com.github.johnrengelman.shadow", version = "8.1.1" }
 spotbugs-base = { id = "com.github.spotbugs-base", version = "6.0.23" }