Added a mock cache to make tests more clear

makefile

@@ -1,7 +1,7 @@
 install-for-tests:
 	@echo "--- Installing dependencies for tests ---"
 	# just use the dev dependencies from mteb to keep everything compatible
-	pip install mteb[dev]
+	pip install mteb[dev]>=1.13.0
 
 test:
 	@echo "--- Running tests ---"