bats-core: update to 1.13.0

[kiwiroy]

Description

• Update to version 1.13.0 of bats-core the Bash Automated Testing System.
• Added additional dependency GNU parallel
• Still skipping tests relying on ps in sandbox environment

Type(s)

• bugfix
• enhancement
• security fix

Tested on

macOS 15.6 24G84 arm64
Xcode 16.2 16C5032a / Command Line Tools 16.4.0.0.1.1747106510

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 in commit message?
• checked your Portfile with port lint?
• tried existing tests with sudo port test?
• tried a full install with sudo port -vst install? (Only -vs since -t cannot extract 66358)
• tested basic functionality of all binary files?
• checked that the Portfile's most important variants haven't been broken? (No variants)