Bump AppVeyor to use RabbitMQ 3.8.2

Author: lukebakken

appveyor.yml

@@ -14,7 +14,7 @@ environment:
 cache:
   # Note: this must match the $rabbitmq_installer_path value in
   # tools\appveyor\install.ps1
-  - "%HOMEDRIVE%%HOMEPATH%\rabbitmq-server-3.7.4.exe"
+  - "%HOMEDRIVE%%HOMEPATH%\rabbitmq-server-3.8.2.exe"
 
 install:
   - IF DEFINED SNKSECRET (nuget install secure-file -ExcludeVersion)

tools/appveyor/install.ps1

@@ -4,8 +4,8 @@ Set-StrictMode -Version 2.0
 
 [Net.ServicePointManager]::SecurityProtocol = [Net.ServicePointManager]::SecurityProtocol -bor 'Tls12'
 
-$rabbitmq_installer_download_url = 'https://github.com/rabbitmq/rabbitmq-server/releases/download/v3.7.4/rabbitmq-server-3.7.4.exe'
-$rabbitmq_installer_path = Join-Path -Path $HOME -ChildPath 'rabbitmq-server-3.7.4.exe'
+$rabbitmq_installer_download_url = 'https://github.com/rabbitmq/rabbitmq-server/releases/download/v3.8.2/rabbitmq-server-3.8.2.exe'
+$rabbitmq_installer_path = Join-Path -Path $HOME -ChildPath 'rabbitmq-server-3.8.2.exe'
 
 $erlang_reg_path = 'HKLM:\SOFTWARE\Ericsson\Erlang'
 if (Test-Path 'HKLM:\SOFTWARE\WOW6432Node\')