chore: Add pgvector back to mandatory dependencies

pgvector is imported directly in PGVector adapter therefore it needs to be installed with mandatory dependencies

Chore #COG-170

poetry.lock

@@ -7765,4 +7765,4 @@ weaviate = ["weaviate-client"]
 [metadata]
 lock-version = "2.0"
 python-versions = ">=3.9.0,<3.12"
-content-hash = "34f873038262904af283d31d4c3c68fd535ca7b36c6837fc97c0d1cc31cf89cb"
+content-hash = "4daa7346dc90750bb6b82ef353f321da2370b60515396d2e1390a3f35510ce55"

pyproject.toml

@@ -70,6 +70,7 @@ sentry-sdk = {extras = ["fastapi"], version = "^2.9.0"}
 fastapi-users = { version = "*", extras = ["sqlalchemy"] }
 asyncpg = "^0.29.0"
 alembic = "^1.13.3"
+pgvector = "^0.3.5"
 
 [tool.poetry.extras]
 filesystem = ["s3fs", "botocore"]
@@ -107,7 +108,6 @@ optional = true
 
 [tool.poetry.group.postgres.dependencies]
 psycopg2 = "^2.9.10"
-pgvector = "^0.3.5"
 
 [tool.ruff] # https://beta.ruff.rs/docs/
 line-length = 100