Use HTTPS for repo1.maven.org

Upstream no longer supports plain HTTP as of today [1].

[1] https://support.sonatype.com/hc/en-us/articles/360041287334
diff --git a/lib/as3/gradle.properties b/lib/as3/gradle.properties
index d918a23..9ace275 100644
--- a/lib/as3/gradle.properties
+++ b/lib/as3/gradle.properties
@@ -14,10 +14,10 @@
 testPort=9090
 
 # Maven dependency download locations
-mvn.repo=http://repo1.maven.org/maven2
+mvn.repo=https://repo1.maven.org/maven2
 apache.repo=https://repository.apache.org/content/repositories/releases
 
 # Apache Maven publish
-license=http://www.apache.org/licenses/LICENSE-2.0.txt
+license=https://www.apache.org/licenses/LICENSE-2.0.txt
 maven-repository-url=https://repository.apache.org/service/local/staging/deploy/maven2
 maven-repository-id=apache.releases.https