Remove `jq` dependency for install script

[peter-bread]

gamon3/scripts/install

Lines 192 to 199 in 3202410

	info "Getting download URL"
	if [ "$RELEASE_VERSION" = "latest" ]; then
	if ! command -v jq >/dev/null 2>&1; then
	error "Getting checksums for latest release requires jq"
	exit 1
	fi
	RELEASE_VERSION=$(curl -s "https://api.github.com/repos/peter-bread/gamon3/releases/latest" | jq -r '.tag_name')
	fi