ci: turn mypy check into a part of style-check

Makefile

@@ -17,6 +17,8 @@ pystyle_check: ## run code style check on application sources and tests
 	flake8 --version
 	isort --version | awk '/VERSION/{print $$2}'
 	black --version
+	@echo [MYPY]
+	@make -C core mypy
 	@echo [FLAKE8]
 	@flake8 $(PY_FILES)
 	@echo [ISORT]
@@ -30,6 +32,8 @@ pystyle: ## apply code style on application sources and tests
 	@isort $(PY_FILES)
 	@echo [BLACK]
 	@black $(PY_FILES)
+	@echo [MYPY]
+	@make -C core mypy
 	@echo [FLAKE8]
 	@flake8 $(PY_FILES)
 	make -C python style

ci/test.yml

@@ -225,16 +225,6 @@ core unix persistence test:
     expire_in: 1 week
     when: always
 
-core mypy test:
-  stage: test
-  <<: *only_changes_core
-  dependencies: []  # no artifacts needed
-  script:
-    - cd core
-    - pipenv run mypy --version
-    - pipenv run make res  # needed for clean mypy
-    - pipenv run make mypy
-
 
 # Crypto