Update repositories to HTTPS.

Author: Gohla

jasmin.test/pom.xml

@@ -49,7 +49,7 @@
   <repositories>
     <repository>
       <id>metaborg-release-repo</id>
-      <url>http://artifacts.metaborg.org/content/repositories/releases/</url>
+      <url>https://artifacts.metaborg.org/content/repositories/releases/</url>
       <releases>
         <enabled>true</enabled>
       </releases>
@@ -59,7 +59,7 @@
     </repository>
     <repository>
       <id>metaborg-snapshot-repo</id>
-      <url>http://artifacts.metaborg.org/content/repositories/cs4200/</url>
+      <url>https://artifacts.metaborg.org/content/repositories/cs4200/</url>
       <releases>
         <enabled>false</enabled>
       </releases>
@@ -72,7 +72,7 @@
   <pluginRepositories>
     <pluginRepository>
       <id>metaborg-release-repo</id>
-      <url>http://artifacts.metaborg.org/content/repositories/releases/</url>
+      <url>https://artifacts.metaborg.org/content/repositories/releases/</url>
       <releases>
         <enabled>true</enabled>
       </releases>
@@ -82,7 +82,7 @@
     </pluginRepository>
     <pluginRepository>
       <id>metaborg-snapshot-repo</id>
-      <url>http://artifacts.metaborg.org/content/repositories/cs4200/</url>
+      <url>https://artifacts.metaborg.org/content/repositories/cs4200/</url>
       <releases>
         <enabled>false</enabled>
       </releases>