Retrofit assert_type for Aggregate and Callable (#935) #1356

Job	Run time
Run tests with different pydantic versions	3m 6s
Run tests (3.8)	1m 53s
Run tests (3.9)	1m 53s
Run tests (3.10)	1m 53s
Run linters (pydocstyle)	1m 37s
Run tests (3.13)	1m 50s
Run tests (3.12)	1m 57s
Run tests (3.11)	1m 51s
Run linters (pylint)	1m 33s
Run linters (flake8)	1m 36s
Run tests with coverage	2m 48s
Run linters (mypy)	1m 32s
	23m 29s

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