rsync: update to 3.4.0

[breun]

Description

Update to rsync 3.4.0, which fixes a couple of CVEs.

Type(s)

• bugfix
• enhancement
• security fix

Tested on

macOS 15.2 24C101 arm64
Xcode 16.2 16C5032a

Verification

Have you

• followed our Commit Message Guidelines?
• squashed and minimized your commits?
• checked that there aren't other open pull requests for the same change?
• checked your Portfile with port lint?
• tried existing tests with sudo port test?
• tried a full install with sudo port -vst install?
• tested basic functionality of all binary files?
• checked that the Portfile's most important variants haven't been broken?

[macportsbot]

Notifying maintainers:
@ryandesign for port rsync.

[aeiouaeiouaeiouaeiouaeiouaeiou]

Already updated to version 3.4.1.