FIX Fixed mypy Type Failures

[elgertam]

Description

Previously, # mypy: ignore-errors was present at the module level in pyrit.memory.memory_models. In order to have better code safety, we want to remove this line and add proper type-checking. This commit adds in much more type checking, with only a few uses of # type: ignore. In some cases, those are necessary, though a few can likely be mitigated with the use of generics, particularly in pyrit.memory.duckdb_memory and pyrit.memory.azure_sql_memory.

CC: @rdheekonda @rdheekonda @romanlutz