Use fixed powershell module from origin

Author: AlexNDRmac

.appveyor.yml

@@ -76,8 +76,7 @@ environment:
       VCVARSALL: "C:/Program Files (x86)/Microsoft Visual Studio/2019/Community/VC/Auxiliary/Build/vcvarsall.bat"
 
   PHP_SDK_VERSION: 2.1.9
-  # PHP_AVM: https://raw.githubusercontent.com/sergeyklay/php-appveyor/master/php-appveyor.psm1
-  PHP_AVM: https://raw.githubusercontent.com/AlexNDRmac/php-appveyor/fix-for-php8/php-appveyor.psm1
+  PHP_AVM: https://raw.githubusercontent.com/sergeyklay/php-appveyor/master/php-appveyor.psm1
 
   TEST_PHP_EXECUTABLE: C:\php\php.exe
   NO_INTERACTION: 1