dropbearkey: make rsa as a default value for -t #204

	# Checks that autoconf has been run if configure.ac was updated
	# Assumes that autoconf 2.69 was run, the same as ubuntu 20.04
	name: Autoconf Up To Date
	on:
	pull_request:
	push:
	branches:
	- master
	jobs:
	autoconf:
	runs-on: 'ubuntu-22.04'

	steps:
	- name: deps
	run: \|
	sudo apt-get -y update
	sudo apt-get -y install autoconf

	- uses: actions/checkout@v3

	- name: run autoconf
	run: autoconf && autoheader

	- name: check no difference
	run: git diff --exit-code

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