test: Set separator to new line

Author: HofmeisterAn

.github/scripts/Filter-TestProjects.ps1

@@ -117,7 +117,7 @@ function Filter-TestProjects {
 
     Begin {
         $script:branch = $env:GITHUB_REF_NAME
-        $script:allChangedFiles = $env:ALL_CHANGED_FILES -Split "[\s\t\n]"
+        $script:allChangedFiles = $env:ALL_CHANGED_FILES -Split "`n"
         $script:filteredModules = @()
 
         Write-Host "Filtering test projects for branch '$script:branch'."

.github/workflows/cicd.yml

@@ -40,6 +40,8 @@ jobs:
       - id: get-all-changed-files
         name: Collect Changed Files
         uses: tj-actions/changed-files@v47
+        with:
+          separator: \n
 
       - id: set-test-projects
         name: Collect Test Projects