publishing: Truncate the git commit to 10 characters (#15)

https://github.com/Faire/build-targets-gradle-plugin/actions/runs/10426499138/job/28879547320#step:6:63

build-targets-gradle-plugin/build.gradle.kts

@@ -16,7 +16,7 @@ if (!providers.environmentVariable("RELEASE").isPresent) {
         providers.exec { commandLine("git", "rev-parse", "--short", "HEAD") }
           .standardOutput
           .asText
-          .map { it.trim() }
+          .map { it.trim().take(10) }
           .get()
       },
     )