Use HTTPS instead of HTTP to resolve dependencies

This fixes a security vulnerability in this project where the `pom.xml`
files were configuring Maven to resolve dependencies over HTTP instead of
HTTPS.

Signed-off-by: Jonathan Leitschuh <[email protected]>

Author: JLLeitschuh

pom.xml

@@ -41,11 +41,11 @@
   <distributionManagement>
     <repository>
       <id>sonatype-nexus-staging</id>
-      <url>http://oss.sonatype.org/service/local/staging/deploy/maven2/</url>
+      <url>https://oss.sonatype.org/service/local/staging/deploy/maven2/</url>
     </repository>
     <snapshotRepository>
       <id>sonatype-nexus-snapshots</id>
-      <url>http://oss.sonatype.org/content/repositories/snapshots</url>
+      <url>https://oss.sonatype.org/content/repositories/snapshots</url>
     </snapshotRepository>
   </distributionManagement>
   <properties>