Convention execution is out of order

[BernieWhite]

Description of the issue

Currently conventions are executed in the order they are discovered, instead of the configured order.

Expected behaviour

Conventions should be executed in the order they are configured.

Module in use and version:

• Module: PSRule
• Version: 1.9.0-B2110015

Captured output from $PSVersionTable:

Name                           Value
----                           -----
PSVersion                      7.1.5
PSEdition                      Core
GitCommitId                    7.1.5
OS                             Microsoft Windows 10.0.22000
Platform                       Win32NT
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0…}
PSRemotingProtocolVersion      2.3
SerializationVersion           1.1.0.1
WSManStackVersion              3.0