Prior to this commit, the puppet_agent::prepare::package class used the
sha256lite algorithm in the file resource for local installation
packages.

In certain circumstances (e.g. when a download is interrupted), this
checksum, which only checks the first N bytes, does not provide
sufficient information to determine if the file is actually there.

This commit removes the checksum attribute altogether, which causes the
file resource to use its default algorithm, sha256. This algorithm
should handle circumstances like those outlined above.

(PA-5266) Change checksum algorithm to SHA256

Adding Trusted Contributors to the CODEOWNERS will allow them to meet our branch protection rules and merge pull requests. If you would rather keep that privilege for your own team, then you can decline this PR.

As part of 404df9d all parameters in this module were assigned a data
type. However, some required parameters were mistakenly classed as
Optional and vice-versa.

Puppet's documentation states "If a class parameter lacks a default
value, the parameter is considered required."[1]

This commit updates all parameters with default values to Optional (and
whatever other relevant data type) and all parameters without default
value as required. The REFERENCE.md has been updated to reflect these
changes.

Additionally, this commit updates all Optional parameters be set as
undef, as suggested by the optional_default puppet-lint check.

[1] https://www.puppet.com/docs/puppet/7/lang_classes#class-parameters-and-variables

(maint) Update optional parameters

(maint) Update CODEOWNERS

In PR #663 an overly strict datatype was set for the
skip_if_unavailable parameter. The yumrepo type supports
a variety of string values and boolean values.

Match allowed datatypes to yumrepo skip_if_unavailable support

Previously, 74e022d erroneously typed the $package_version and
$install_options parameters as Optional.

This commit updates those parameters to be required, and gives a more
specific type to $install_options.

…tions

(PA-5820) Correct parameter types

The Checkout GitHub Action v3 uses Node 16, which hit end-of-life on
September 11, 2023.

This commit updates all instances of the Checkout Action from v3 to
v4.

(PA-5792) Update Checkout GitHub Action

(PA-5013) Add Red Hat 9 (ARM64) to the puppet_agent module task

(PA-5065) Add Ubuntu 22.04 (ARM64) to the puppet_agent module

Previously, puppetserver attempted to load the wrong VERSION file when managing
`package_version => auto` and compiling catalogs for Windows nodes as can be
seen by the new test:

    Evaluation Error: Error while evaluating a Function Call, Could not find any files from C:\Program Files\Puppet Labs\Puppet\VERSION (file: path/to/init.pp, line: 170, column: 42)

This adds a `puppet_runmode` fact. When running as puppet agent, the run mode will
be `agent`. When running as puppet apply, it will be `user`. If it's the latter
and we're a Windows host, then look for the VERSION file locally.

Since the default class parameter is no longer dependent on the agent
fact, I regenerated the reference using rake strings:generate:reference

(PA-5826) Only read Windows VERSION file during puppet apply

.project files were once used for the long-defunct Geppetto. This commit
removes an old .project file in the root of this project.

(maint) Remove .project file

Release prep v4.16.0