py-tensorflow-metal and related: Update versions and add newly available Python 310

[essandess]

Description

Type(s)

• bugfix
• enhancement
• security fix

Tested on

macOS 12.4 21F79 x86_64
Xcode 13.4 13F17a

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?

[macportsbot]

Notifying maintainers:
@stromnov for port py-keras, py-keras_applications, py-keras_preprocessing.
@cjones051073 for port py-tensorboard.
@emcrisostomo for port py-tensorboard.