URL Cleanup

[spring-operator]

This commit updates URLs to prefer the https protocol. Redirects are not followed to avoid accidentally expanding intentionally shortened URLs (i.e. if using a URL shortener).

Fixed URLs

Fixed Success

These URLs were switched to an https URL with a 2xx status. While the status was successful, your review is still recommended.

• [ ] http://repo.spring.io/libs-milestone-local with 2 occurrences migrated to:
  https://repo.spring.io/libs-milestone-local (https result 302).
• [ ] http://repo.spring.io/libs-snapshot-local with 2 occurrences migrated to:
  https://repo.spring.io/libs-snapshot-local (https result 302).
• [ ] http://repo.spring.io/release with 1 occurrences migrated to:
  https://repo.spring.io/release (https result 302).

Ignored

These URLs were intentionally ignored.

• http://maven.apache.org/POM/4.0.0 with 8 occurrences
• http://www.w3.org/2001/XMLSchema-instance with 4 occurrences