feat(workflows): Deprecate 'ubuntu-20.04' and 'macos-11'

Signed-off-by: Cezar Craciunoiu <cezar.craciunoiu@unikraft.io>

Author: craciunoiuc

.github/workflows/tests-stable.yaml

@@ -9,7 +9,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-22.04, ubuntu-20.04, macos-11, macos-12, mac-m2-14]
+        os: [ubuntu-24.04, ubuntu-22.04, macos-12, macos-13, macos-14, mac-m2-14]
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v4
@@ -47,7 +47,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-22.04, ubuntu-20.04]
+        os: [ubuntu-24.04, ubuntu-22.04]
     runs-on: ${{ matrix.os }}
 
     steps:
@@ -98,7 +98,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-22.04]
+        os: [ubuntu-24.04]
     runs-on: ${{ matrix.os }}
 
     steps:

.github/workflows/tests.yaml

@@ -14,7 +14,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-22.04]
+        os: [ubuntu-24.04]
 
     runs-on: ${{ matrix.os }}
 
@@ -54,7 +54,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-22.04]
+        os: [ubuntu-24.04]
 
     runs-on: ${{ matrix.os }}
 
@@ -107,7 +107,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-22.04]
+        os: [ubuntu-24.04]
 
     runs-on: ${{ matrix.os }}