(build) Get CI builds working

Pin version of Cake.Tool to be the same as what is defined in the tool
manifest file, and also update to a newer version of the AppVeyor build
image.

Author: gep13

.appveyor.yml

@@ -2,7 +2,7 @@
 #---------------------------------#
 #  Build Image                    #
 #---------------------------------#
-image: Visual Studio 2019
+image: Visual Studio 2022
 
 #---------------------------------#
 #  Build Script                   #

.github/workflows/build.yml

@@ -38,8 +38,7 @@ jobs:
           script-path: recipe.cake
           target: CI
           verbosity: Normal
-          cake-version: 0.38.5
-          cake-bootstrap: true
+          cake-version: tool-manifest
 
       - name: Upload Issues-Report
         uses: actions/upload-artifact@v2