(CAT-2296) Update github runner image to ubuntu-24.04

ubuntu-20.04 is not supported anymore: actions/runner-images#11101

Author: shubhamshinde360

.github/workflows/ci.yml

@@ -16,4 +16,4 @@ jobs:
     uses: "puppetlabs/cat-github-actions/.github/workflows/module_acceptance.yml@main"
     secrets: "inherit"
     with:
-      runs_on: "ubuntu-20.04"
+      runs_on: "ubuntu-24.04"

.github/workflows/nightly.yml

@@ -15,4 +15,4 @@ jobs:
     uses: "puppetlabs/cat-github-actions/.github/workflows/module_acceptance.yml@main"
     secrets: "inherit"
     with:
-      runs_on: "ubuntu-20.04"
+      runs_on: "ubuntu-24.04"