ci: fix 'empty ident name' when publishing

[tido64]

Description

Publishing fails because Git identity has not been set:

NX   Unexpected error when creating tag 4.3.11:


Committer identity unknown

*** Please tell me who you are.

Run

  git config --global user.email "you@example.com"
  git config --global user.name "Your Name"

to set your account's default identity.
Omit --global to set the identity only in this repository.

fatal: empty ident name (for <runner@fv-az1[34](https://github.com/microsoft/react-native-test-app/actions/runs/15279298976/job/42974898179#step:7:35)4-429.xkidvujvxjlehivufvm5abktke.cx.internal.cloudapp.net>) not allowed

Pass --verbose to see the stacktrace.

Build log: https://github.com/microsoft/react-native-test-app/actions/runs/15279298976/job/42974898179

Platforms affected

• Android
• iOS
• macOS
• visionOS
• Windows

Test plan

This can only be tested on trunk