pester runner, detection based on standard Requires directive (#9528)

Author: niphlod

tests/Invoke-DbaQuery.Tests.ps1

@@ -1,4 +1,4 @@
-#HaveParameter - yeah, I know.
+#Requires -Module @{ ModuleName="Pester"; ModuleVersion="5.0"}
 
 BeforeAll {
     $CommandName = (Get-Item $PSCommandPath).Name.Replace(".Tests.ps1", "")

tests/appveyor.pester.ps1

@@ -162,7 +162,7 @@ function Get-CodecovReport($Results, $ModuleBase) {
 
 function Get-PesterTestVersion($testFilePath) {
     $testFileContent = Get-Content -Path $testFilePath -Raw
-    if ($testFileContent -match 'HaveParameter')
+    if ($testFileContent -match '#Requires\s+-Module\s+@\{\s+ModuleName="Pester";\s+ModuleVersion="5\.')
     {
         return '5'
     }