chore(deps): bump actions/setup-java from 4 to 5 #178

	# SPDX-License-Identifier: Apache-2.0
	# © Crown Copyright 2025. This work has been developed by the National Digital Twin Programme and is legally attributed to the Department for Business and Trade (UK) as the governing entity.

	name: GitFlow - PR Target Check

	on:
	pull_request:
	types: [ opened, synchronize, reopened, edited ]

	jobs:
	pr-target-check:
	runs-on: ubuntu-latest
	steps:
	- name: Check merge target
	run: \|
	BASE_BRANCH="${{ github.base_ref }}"
	HEAD_BRANCH="${{ github.head_ref }}"

	# Allow merging feature, hotfix, or bugfix into develop
	if [[ "$HEAD_BRANCH" =~ ^(feature/\|hotfix/\|bugfix/) && "$BASE_BRANCH" == "develop" ]]; then
	echo "✅ Allowed: $HEAD_BRANCH → $BASE_BRANCH"
	exit 0
	fi

	# Verify Dependabot branches
	if [[ "$HEAD_BRANCH" =~ ^(dependabot/) && "$BASE_BRANCH" == "develop" ]]; then
	echo "✅ Not GitFlow but allowed: $HEAD_BRANCH → $BASE_BRANCH"
	exit 0
	fi

	# Allow merging release into main
	if [[ "$HEAD_BRANCH" =~ ^release/.*$ && "$BASE_BRANCH" == "main" ]]; then
	echo "✅ Allowed: $HEAD_BRANCH → $BASE_BRANCH"
	exit 0
	fi

	# If none of the above conditions match, block the PR
	echo "❌ Error: Invalid PR - '$HEAD_BRANCH' cannot be merged into '$BASE_BRANCH'."
	echo "✅ Allowed merges:"
	echo " - feature/, hotfix/, bugfix/* → develop"
	echo " - release/* → main"
	exit 1

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