build: Update Github Actions to use only supported distros

.github/workflows/build.yml

@@ -21,7 +21,7 @@ jobs:
 
     strategy:
       matrix:
-        os: ['ubuntu-22.04', 'ubuntu-24.04', 'macos-latest', 'macos-latest-large']
+        os: ['ubuntu-22.04', 'ubuntu-24.04', 'macos-latest']
         cc: ['gcc', 'clang']
 
     steps:

.github/workflows/kernel.yml

@@ -16,7 +16,7 @@ jobs:
 
     strategy:
       matrix:
-        os: ['ubuntu-20.04', 'ubuntu-22.04']
+        os: ['ubuntu-22.04', 'ubuntu-24.04']
 
     steps:
     - name: Checkout repository

INSTALL.md

@@ -3,8 +3,8 @@ Installation instructions for libx52
 
 Build has been tested on the following operating systems (x86-64 only):
 
-* Ubuntu 20.04 LTS
 * Ubuntu 22.04 LTS
+* Ubuntu 24.04 LTS
 * macOS Big Sur 11
 * macOS Monterey 12