Change the default value of `ssh.loadDotSSHPubKeys` from `true` to `false`

[AkihiroSuda]

lima/examples/default.yaml

Lines 111 to 122 in 9d29da3

	ssh:
	# A localhost port of the host. Forwarded to port 22 of the guest.
	# 🟢 Builtin default: 0 (automatically assigned to a free port)
	# NOTE: when the instance name is "default", the builtin default value is set to
	# 60022 for backward compatibility.
	localPort: 0
	# Load ~/.ssh/*.pub in addition to $LIMA_HOME/_config/user.pub .
	# This option is useful when you want to use other SSH-based
	# applications such as rsync with the Lima instance.
	# If you have an insecure key under ~/.ssh, do not use this option.
	# 🟢 Builtin default: true
	loadDotSSHPubKeys: null

This might be a breaking change for new instances, but does not affect existing instances.