Bump com.github.luiox:morpher-api from v1.6 to v1.8

Bumps [com.github.luiox:morpher-api](https://github.com/luiox/morpher-api) from v1.6 to v1.8.
- [Release notes](https://github.com/luiox/morpher-api/releases)
- [Commits](v1.6...v1.8)

---
updated-dependencies:
- dependency-name: com.github.luiox:morpher-api
  dependency-version: v1.8
  dependency-type: direct:production
...

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

Author: dependabot[bot]

morpher-passes/build.gradle.kts

@@ -15,7 +15,7 @@ dependencies {
     testImplementation(platform("org.junit:junit-bom:${properties["junit_version"] as String}"))
     testImplementation("org.junit.jupiter:junit-jupiter")
 
-    implementation("com.github.luiox:morpher-api:v1.6")
+    implementation("com.github.luiox:morpher-api:v1.8")
 //    implementation(project(":morpher-api"))
 }