PNPM: Update to 9.1.12

[JLindop]

MACH-O files for all architechtures in all distributions. The port can't be marked as Universal because it depends on Node, which doesn't have a universal variant

Type(s)

• bugfix
• enhancement
• security fix

Tested on

macOS 15.0.1 24A348 arm64
Xcode 16.0 16A242d

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 --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:
@sainnhe for port pnpm.