Add validation for a few string fields #5715

	name: golangci-lint
	on:
	pull_request:
	permissions:
	contents: read
	jobs:
	golangci:
	name: lint
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	with:
	fetch-depth: 0

	- uses: actions/setup-go@v4
	with:
	go-version-file: 'go.mod'
	check-latest: true

	- name: golangci-lint
	uses: golangci/golangci-lint-action@v3
	with:
	version: v1.54.2
	args: --verbose --timeout 10m --fix=false --new-from-rev=HEAD~ --config=.golangci.yml

	- name: check-is-dirty
	run: \|
	if [[ -n $(git status --porcelain) ]]; then
	echo "Detected uncommitted changes."
	git status
	git diff
	exit 1
	fi

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