Update CI

Signed-off-by: Alex Forencich <alex@alexforencich.com>

.github/workflows/regression-tests.yml

@@ -5,11 +5,11 @@ on: [push, pull_request]
 jobs:
   build:
     name: Python ${{matrix.python-version}}
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-24.04
     
     strategy:
       matrix:
-        python-version: ["3.7", "3.8", "3.9", "3.10", "3.11"]
+        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
 
     steps:
     - uses: actions/checkout@v3

README.md

@@ -1,6 +1,6 @@
 # Ethernet interface modules for Cocotb
 
-[![Build Status](https://github.com/alexforencich/cocotbext-eth/workflows/Regression%20Tests/badge.svg?branch=master)](https://github.com/alexforencich/cocotbext-eth/actions/)
+[![Regression Tests](https://github.com/alexforencich/cocotbext-eth/actions/workflows/regression-tests.yml/badge.svg)](https://github.com/alexforencich/cocotbext-eth/actions/workflows/regression-tests.yml)
 [![codecov](https://codecov.io/gh/alexforencich/cocotbext-eth/branch/master/graph/badge.svg)](https://codecov.io/gh/alexforencich/cocotbext-eth)
 [![PyPI version](https://badge.fury.io/py/cocotbext-eth.svg)](https://pypi.org/project/cocotbext-eth)
 [![Downloads](https://pepy.tech/badge/cocotbext-eth)](https://pepy.tech/project/cocotbext-eth)