Fix postgresql psd1 file (#13282)

Co-authored-by: Dingmeng Xue <[email protected]>

Author: msJinLei

src/PostgreSql/Az.PostgreSql.psd1

@@ -51,7 +51,7 @@ DotNetFrameworkVersion = '4.7.2'
 # ProcessorArchitecture = ''
 
 # Modules that must be imported into the global environment prior to importing this module
-# RequiredModules = @()
+RequiredModules = @(@{ModuleName = 'Az.Accounts'; ModuleVersion = '1.9.5'; })
 
 # Assemblies that must be loaded prior to importing this module
 RequiredAssemblies = './bin/Az.PostgreSql.private.dll'