fix: Simplify prescript execution in action.yml

Author: MariusStorhaug

action.yml

@@ -355,14 +355,11 @@ runs:
         PSMODULE_INVOKE_PESTER_INPUT_StepSummary_ShowConfiguration: ${{ inputs.StepSummary_ShowConfiguration }}
         PSMODULE_INVOKE_PESTER_INPUT_Debug: ${{ inputs.Debug }}
         PSMODULE_INVOKE_PESTER_INPUT_Verbose: ${{ inputs.Verbose }}
-        PSMODULE_INVOKE_PESTER_INPUT_Prescript: ${{ inputs.Prescript }}
       id: test
       run: |
         # Invoke-Pester (exec)
-        if ($env:PSMODULE_INVOKE_PESTER_INPUT_Prescript) {
-            Invoke-Expression $env:PSMODULE_INVOKE_PESTER_INPUT_Prescript
-        }
-        & "${{ github.action_path }}/src/exec.ps1"
+        ${{ inputs.Prescript }} # zizmor: ignore[template-injection]
+        ${{ github.action_path }}/src/exec.ps1
 
     - name: Upload test results - [${{ steps.test.outputs.TestSuiteName }}-TestResults]
       uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6.0.0