refactor: Move psycopg2 to an optional dependency

Moved psycopg2 as an optional dependency for postgres to not block users with lib issues it might cause

Refactor #COG-170

poetry.lock

@@ -1,4 +1,4 @@
-# This file is automatically @generated by Poetry 1.8.3 and should not be changed by hand.
+# This file is automatically @generated by Poetry 1.8.4 and should not be changed by hand.
 
 [[package]]
 name = "aiofiles"
@@ -7765,4 +7765,4 @@ weaviate = ["weaviate-client"]
 [metadata]
 lock-version = "2.0"
 python-versions = ">=3.9.0,<3.12"
-content-hash = "505c4f6f2128aea335ea6065221cf4692750e374f1b09667d250b6f77f3e4b59"
+content-hash = "9ce846c0cdd6f980fac43d22ea1f046f485fb42270a5cfe04fed061ea74a4f8c"

pyproject.toml

@@ -71,7 +71,6 @@ fastapi-users = { version = "*", extras = ["sqlalchemy"] }
 asyncpg = "^0.29.0"
 alembic = "^1.13.3"
 pgvector = "^0.3.5"
-psycopg2 = "^2.9.10"
 
 
 
@@ -107,6 +106,11 @@ diskcache = "^5.6.3"
 pandas = "2.0.3"
 tabulate = "^0.9.0"
 
+[tool.poetry.group.postgres]
+optional = true
+
+[tool.poetry.group.postgres.dependencies]
+psycopg2 = "^2.9.10"
 
 [tool.ruff] # https://beta.ruff.rs/docs/
 line-length = 100