updated license to Apache2.0 in maven pom

Author: martypitt

preflight-core/build.gradle.kts

@@ -63,4 +63,19 @@ subprojects {
         }
     }
 
+    plugins.withId("maven-publish") {
+        extensions.configure<PublishingExtension> {
+            publications.withType<MavenPublication> {
+                pom {
+                    licenses {
+                        license {
+                            name.set("The Apache License, Version 2.0")
+                            url.set("https://www.apache.org/licenses/LICENSE-2.0.txt")
+                        }
+                    }
+                }
+            }
+        }
+    }
+
 }