Update TUTORIALS_REF

Author: MakisH

tools/tests/reference_versions.yaml

@@ -21,7 +21,7 @@ OPENFOAM_ADAPTER_REF: "2c3062c" # develop, May 27, 2026
 PRECICE_REF: "v3.4.1"
 PYTHON_BINDINGS_REF: "v3.4.0"
 SU2_ADAPTER_REF: "5abe79b"      # develop, May 27, 2026
-TUTORIALS_REF: "5c8e99e"        # other branch, May 30, 2026
+TUTORIALS_REF: "more-tests"
 
 # Additional settings
 PRECICE_PRESET: "production-audit"