Update Python version references from 3.8 to 3.12 in EngineGettingStarted.md

The contributor guide referenced Python 3.8.2, which is outdated. The project
now requires Python 3.12 as specified in README.md and the CI pipelines.

Author: PatGod

docs/contributor-guide/EngineGettingStarted.md

@@ -4,23 +4,23 @@
 
 *  https://code.visualstudio.com/download
 
-## Step 2: Install Python 3.8.2
+## Step 2: Install Python 3.12
 
 * https://www.python.org/downloads/windows/
 
 ## Step 3: Make sure VSCode points to the right version of python
 
 * In your settings.json file add the path to your virtual environment's python.exe (recommended)
-or the Python38 python.exe:
+or the Python312 python.exe:
   * "python.pythonPath": [path to your virtual environment's python.exe]
-  * "python.pythonPath": "C:\Python38\python.exe"
+  * "python.pythonPath": "C:\Python312\python.exe"
 
 ## Step 4: Make this version of python your default
 
  Adding the following two paths as the first paths to your windows user environment __PATH__ variable
 
-* C:\Python38\Scripts
-* C:\Python38
+* C:\Python312\Scripts
+* C:\Python312
 
 ## Step 5: Create a working directory