Feat/endee version

[MithunEndee]

Added specific version of Endee to match the compatibility of Pydantic<v2

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[MithunEndee]

Hi @XuanYang-cn,

I’ve noticed the CI is failing on the linting step with several UP042 errors (e.g., in backend/clients/api.py and elastic_cloud/config.py).

These errors appear to be "pre-existing" linting issues triggered by the environment difference:

• Locally: My environment (Python < 3.11) passes all checks.
• CI: The Python 3.12 runner is flagging that class Name(str, Enum) should be modernized to class Name(StrEnum).

Since these failures are in files unrelated to my specific changes, please look into the linting issues of other files.

PYTHONPATH=`pwd` python3 -m black vectordb_bench --check
All done! ✨ 🍰 ✨
190 files would be left unchanged.
PYTHONPATH=`pwd` python3 -m ruff check vectordb_bench
UP042 Class MetricType inherits from both `str` and `enum.Enum`
  --> vectordb_bench/backend/clients/api.py:10:7
   |
10 | class MetricType(str, Enum):
   |       ^^^^^^^^^^
11 |     L2 = "L2"
12 |     COSINE = "COSINE"
   |
help: Inherit from `enum.StrEnum`

UP042 Class IndexType inherits from both `str` and `enum.Enum`
  --> vectordb_bench/backend/clients/api.py:19:7
   |
19 | class IndexType(str, Enum):
   |       ^^^^^^^^^
20 |     HNSW = "HNSW"
21 |     HNSW_SQ = "HNSW_SQ"
   |
help: Inherit from `enum.StrEnum`

UP042 Class SQType inherits from both `str` and `enum.Enum`
  --> vectordb_bench/backend/clients/api.py:50:7
   |
50 | class SQType(str, Enum):
   |       ^^^^^^
51 |     SQ6 = "SQ6"
52 |     SQ8 = "SQ8"
   |
help: Inherit from `enum.StrEnum`

UP042 Class ESElementType inherits from both `str` and `enum.Enum`
  --> vectordb_bench/backend/clients/elastic_cloud/config.py:19:7
   |
19 | class ESElementType(str, Enum):
   |       ^^^^^^^^^^^^^
20 |     float = "float"  # 4 byte
21 |     byte = "byte"  # 1 byte, -128 to 127
   |
help: Inherit from `enum.StrEnum`

UP042 Class ESElementType inherits from both `str` and `enum.Enum`
  --> vectordb_bench/backend/clients/tencent_elasticsearch/config.py:23:7
   |
23 | class ESElementType(str, Enum):
   |       ^^^^^^^^^^^^^
24 |     float = "float"  # 4 byte
25 |     byte = "byte"  # 1 byte, -128 to 127
   |
help: Inherit from `enum.StrEnum`

Found 5 errors.
No fixes available (5 hidden fixes can be enabled with the `--unsafe-fixes` option).
make: *** [Makefile:10: lint] Error 1
Error: Process completed with exit code 2.

[XuanYang-cn]

@MithunEndee Please update the latest code to pass the coding style action, I've fixed them in #722