test: fix validate error message (#7961)

* fix validate error message

* remove slashes

Author: mbfreder

tests/integration/validate/test_validate_command.py

@@ -157,7 +157,7 @@ def test_lint_deprecated_runtimes(self, runtime):
             self.assertEqual(command_result.process.returncode, 1)
             self.assertRegex(
                 output,
-                f"\\[\\[E2531: Validate if lambda runtime is deprecated\\] "
+                f"\\[\\[W2531: Check if EOL Lambda Function Runtimes are used] "
                 f"\\(Runtime '{runtime}' was deprecated on.*",
             )
 
@@ -243,9 +243,9 @@ def test_lint_invalid_template(self):
 
         warning_message = (
             "[[E0000: Parsing error found when parsing the template] "
-            '(Duplicate found "HelloWorldFunction" (line 5)) matched 5, '
+            "(Duplicate found 'HelloWorldFunction' (line 5)) matched 5, "
             "[E0000: Parsing error found when parsing the template] "
-            '(Duplicate found "HelloWorldFunction" (line 12)) matched 12]\n'
+            "(Duplicate found 'HelloWorldFunction' (line 12)) matched 12]\n"
         )
 
         self.assertIn(warning_message, output)