Recommend newer Python version in conda docs (#16946)

Co-authored-by: Glenn Jocher <glenn.jocher@ultralytics.com>

docs/en/guides/conda-quickstart.md

@@ -37,7 +37,7 @@ This guide provides a comprehensive introduction to setting up a Conda environme
 First, let's create a new Conda environment. Open your terminal and run the following command:
 
 ```bash
-conda create --name ultralytics-env python=3.8 -y
+conda create --name ultralytics-env python=3.11 -y
 ```
 
 Activate the new environment:
@@ -135,7 +135,7 @@ Congratulations! You have successfully set up a Conda environment, installed the
 Setting up a Conda environment for Ultralytics projects is straightforward and ensures smooth package management. First, create a new Conda environment using the following command:
 
 ```bash
-conda create --name ultralytics-env python=3.8 -y
+conda create --name ultralytics-env python=3.11 -y
 ```
 
 Then, activate the new environment with: