appveyor prod deploy fixes

appveyor.yml

@@ -48,10 +48,12 @@ before_build:
       sudo apt-get update
       sudo apt-get -y install snapd
       sudo snap install snapcraft --classic
+      export PATH="$PATH:/snap/bin"
       echo "$SNAP_TOKEN" | snapcraft login --with -
     fi
 - ps: |
     if($isWindows -and $env:CHOCO_API_KEY -ne $null -and $env:PROD_DEPLOY -eq "true") {
+      choco install checksum --no-progress
       choco apikey --key $env:CHOCO_API_KEY --source https://push.chocolatey.org/
     }