(build) Force installation of older Cake.Git

When running on GitHub Actions, there is an alias using the Cake.Git
GitPush alias.  This seems to be a problem with the 1.1.0 version of
Cake.Git being used by Cake.Issues.Recipe.  Forcing the
installation/usage of an earlier 0.22.0 version, seems to make things
work locally, so let's test that on GitHub Actions.

Author: gep13

docs/input/docs/index.md

@@ -10,8 +10,4 @@ then used to create a Release on GitHub.
 
 In addition to creating a Release, GitReleaseManager can be used to publish a
 release, close a milestone, and also to export the complete set of release notes
-for your application/product.
-
-Testing build and publish of docs...
-
-And moar...
+for your application/product.

recipe.cake

@@ -1,5 +1,6 @@
 #load nuget:?package=Cake.Recipe&version=3.0.1
 #tool dotnet:?package=dotnet-t4&version=2.2.1
+#addin nuget:?package=Cake.Git&version=0.22.0
 
 Environment.SetVariableNames(githubTokenVariable: "GITTOOLS_GITHUB_TOKEN");