Change installation instructions to be bounded to minor version, not patch

[joellabes]

Now that we're actively encouraging people to install the latest patch version instead of a specific one, we should be showing

packages:
  - package: dbt-labs/dbt_utils
    version: [">=0.8.0", "<0.9.0"]

instead of what we currently have:

My gut feeling is that I can make a new function to calculate the range in the same way as we strip leading vs

hub.getdbt.com/config.rb

Lines 24 to 30 in 8786986

	def strip_leading_v(version)
	if version.start_with?("v")
	version[1..-1]
	else
	version
	end
	end

Add the new version_bounds into the version_data object here

hub.getdbt.com/config.rb

Lines 32 to 41 in 8786986

	def _build_package(package, org, name)
	entry = package['index'].clone
	versions = package['versions']
	new_versions = {}
	versions.each do |version_num, version_data|
	version_num = strip_leading_v(version_num)
	version_data['version'] = strip_leading_v(version_data['version'])
	new_versions[version_num] = version_data

and reference version.version_bounds here instead of version.version

hub.getdbt.com/source/package.template.html.erb

Lines 64 to 69 in caa96df

	<p>Include the following in your <code>packages.yml</code> file:
	<pre id='install'>
	packages:
	- package: <%= package.namespace %>/<%= package.name %>
	version: <%= version.version %></pre>
	<p> Run <code>dbt deps</code> to install the package.

but I haven't written any Ruby before so I don't know what traps await me (or how to test this)

@annafil as the resident Ruby fanatic you seem like my best bet for some pointers 🙏