Docs: update python version to 3.13 (#15103)

### What problem does this PR solve?

1. update python version to 3.13
2. upgrade ormsgpack to 1.6.0

### Type of change

- [x] Refactoring

---------

Signed-off-by: Jin Hai <haijin.chn@gmail.com>

test/README.md

@@ -10,7 +10,7 @@
 **Install Python dependencies (including test dependencies):**
 
 ```bash
-uv sync --python 3.12 --only-group test --no-default-groups --frozen
+uv sync --python 3.13 --only-group test --no-default-groups --frozen
 
 ```
 

test/benchmark/README.md

@@ -251,7 +251,7 @@ These scripts create a dataset,
 upload/parse docs from test/benchmark/test_docs, run the benchmark, and clean up.
 The both script runs retrieval then chat on the same dataset, then deletes it.
 
-- Make sure to run ```uv sync --python 3.12 --group test ``` before running the commands.
+- Make sure to run ```uv sync --python 3.13 --group test ``` before running the commands.
 - It is also necessary to run these commands prior to initializing your containers if you plan on using the built-in embedded model: ```echo -e "TEI_MODEL=BAAI/bge-small-en-v1.5" >> docker/.env``` 
   and ```echo -e "COMPOSE_PROFILES=\${COMPOSE_PROFILES},tei-cpu" >> docker/.env```
 

test/benchmark/auth.py

@@ -12,7 +12,7 @@ def encrypt_password(password_plain: str) -> str:
         from api.utils.crypt import crypt
     except Exception as exc:
         raise AuthError(
-            "Password encryption unavailable; install pycryptodomex (uv sync --python 3.12 --group test)."
+            "Password encryption unavailable; install pycryptodomex (uv sync --python 3.13 --group test)."
         ) from exc
     return crypt(password_plain)