Update stale and redirecting links

- http://dev.maxmind.com/ -> https://dev.maxmind.com/ (pom.xml)
- http://www.apache.org/licenses/LICENSE-2.0.html -> https://www.apache.org/licenses/LICENSE-2.0.html (pom.xml)
- http://www.maxmind.com/ -> https://www.maxmind.com/en/home (pom.xml)
- https://www.maxmind.com/en/support -> https://support.maxmind.com/knowledge-base (README.md, UPGRADING.md)

Part of STF-557.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: oschwald

README.md

@@ -285,7 +285,7 @@ Please report all issues with this code using the [GitHub issue
 tracker](https://github.com/maxmind/MaxMind-DB-Reader-java/issues).
 
 If you are having an issue with a MaxMind database or service that is not
-specific to this reader, please [contact MaxMind support](https://www.maxmind.com/en/support).
+specific to this reader, please [contact MaxMind support](https://support.maxmind.com/knowledge-base).
 
 ## Requirements  ##
 

UPGRADING.md

@@ -252,4 +252,4 @@ To help identify code that needs updating, you can search your codebase for:
 If you encounter issues during the upgrade, please check:
 
 - [GitHub Issues](https://github.com/maxmind/MaxMind-DB-Reader-java/issues)
-- [MaxMind Support](https://www.maxmind.com/en/support)
+- [MaxMind Support](https://support.maxmind.com/knowledge-base)

pom.xml

@@ -7,17 +7,17 @@
     <packaging>jar</packaging>
     <name>MaxMind DB Reader</name>
     <description>Reader for MaxMind DB</description>
-    <url>http://dev.maxmind.com/</url>
+    <url>https://dev.maxmind.com/</url>
     <licenses>
         <license>
             <name>Apache License 2.0</name>
-            <url>http://www.apache.org/licenses/LICENSE-2.0.html</url>
+            <url>https://www.apache.org/licenses/LICENSE-2.0.html</url>
             <distribution>repo</distribution>
         </license>
     </licenses>
     <organization>
         <name>MaxMind, Inc.</name>
-        <url>http://www.maxmind.com/</url>
+        <url>https://www.maxmind.com/en/home</url>
     </organization>
     <scm>
         <url>https://github.com/maxmind/MaxMind-DB-Reader-java</url>