[Python] actions/setup-python@v3 failing with Error: Version 3.8 with arch x64 not found

Here's my workflow:

name: My First GitHub Actions

on: [push]

jobs:
build:
runs-on: self-hosted

strategy:
matrix:
python-version: [3.8, 3.9]

steps:
- uses: actions/checkout@v3
- name: Set up Python
uses: actions/setup-python@v3
with:
python-version: ${{ matrix.python-version }}

- name: Install dependencies
run: |
python -m pip install --upgrade pip
pip install pytest

- name: Run tests
run: |
cd src
python -m pytest addition.py


But getting this error:

ubuntu@ip-172-31-16-175:~/actions-runner$ ./run.sh

√ Connected to GitHub

Current runner version: '2.316.1'
2024-05-18 18:20:12Z: Listening for Jobs
2024-05-18 18:20:15Z: Running job: build (3.8)
2024-05-18 18:20:23Z: Job build (3.8) completed with result: Failed
2024-05-18 18:20:24Z: Running job: build (3.9)
2024-05-18 18:20:28Z: Job build (3.9) completed with result: Canceled


Logs are showing this error:

Version 3.8 was not found in the local cache: Error: Version 3.8 with arch x64 not found
​

Tried different Python versions but still getting the same error.

The list of all available versions can be found here: https://raw.githubusercontent.com/actions/python-versions/main/versions-manifest.json

Can anyone please help me resolve these errors?

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