kerberos5: Update Portfile to better handle Python version

[Zweihorn]

ref https://trac.macports.org/ticket/67889#comment:2

Description

Avoid python branch deviates from version in Portfile.

Type(s)

• bugfix
• enhancement
• security fix

Tested on

macOS 11.7.9 20G1426 x86_64
Xcode 13.0 13A233

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?
• referenced existing tickets on Trac with full URL?
• checked your Portfile with port lint --nitpick?
• 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 kerberos5.

[ryandesign]

You haven't followed the commit message guidelines, but as I mentioned in the ticket, I want to see if we can remove the python dependency entirely since it doesn't seem to make a difference.

[Zweihorn]

You haven't followed the commit message guidelines, but as I mentioned in the ticket, I want to see if we can remove the python dependency entirely since it doesn't seem to make a difference.

THX and I will seek to improve next time.
At your deliberation as maintainer. I stay interested to see the outcome and as I said "just an idea". Feel free.

🌻

[reneeotten]

@ryandesign - you want to close this PR and try to remove the Python dependency?