fix(unittest): add pymilvus and milvus-lite to unit dep group

This commit resolves unittest-3.12 issues.

- It adds pymilvus and milvus-lite to unit dep group
- It rename VectorDB to VectorStore

Signed-off-by: Mustafa Elbehery <melbeher@redhat.com>

uv.lock

@@ -1,5 +1,5 @@
 version = 1
-revision = 2
+revision = 3
 requires-python = ">=3.12"
 resolution-markers = [
     "(python_full_version >= '3.13' and platform_machine != 'aarch64' and sys_platform == 'linux') or (python_full_version >= '3.13' and sys_platform != 'darwin' and sys_platform != 'linux')",
@@ -2074,9 +2074,11 @@ unit = [
     { name = "faiss-cpu" },
     { name = "litellm" },
     { name = "mcp" },
+    { name = "milvus-lite" },
     { name = "moto", extra = ["s3"] },
     { name = "ollama" },
     { name = "psycopg2-binary" },
+    { name = "pymilvus" },
     { name = "pypdf" },
     { name = "sqlalchemy", extra = ["asyncio"] },
     { name = "sqlite-vec" },
@@ -2216,9 +2218,11 @@ unit = [
     { name = "faiss-cpu" },
     { name = "litellm" },
     { name = "mcp" },
+    { name = "milvus-lite", specifier = ">=2.5.0" },
     { name = "moto", extras = ["s3"], specifier = ">=5.1.10" },
     { name = "ollama" },
     { name = "psycopg2-binary", specifier = ">=2.9.0" },
+    { name = "pymilvus", specifier = ">=2.6.1" },
     { name = "pypdf", specifier = ">=6.1.3" },
     { name = "sqlalchemy" },
     { name = "sqlalchemy", extras = ["asyncio"], specifier = ">=2.0.41" },