Use HTTPS instead of HTTP to resolve dependencies (#1184)

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: NJonathan Leitschuh <Jonathan.Leitschuh@gmail.com>

naked-objects/pom.xml

@@ -52,7 +52,7 @@
 		</repository>
 		<repository>
 			<id>Cloudbees snapshots</id>
-			<url>http://repository-estatio.forge.cloudbees.com/snapshot/</url>
+			<url>https://repository-estatio.forge.cloudbees.com/snapshot/</url>
 			<snapshots>
 			</snapshots>
 			<releases>