Bump GHA to ubuntu-24.04 for libqpid-proton11-dev

The version of libqpid-proton11 in 22.04 is too old and adding the
noble/24.04 repository causes a conflict during install due to libssl
versions.

We can move the entire runner to 24.04, this is going to be the default
for ubuntu-latest shortly anyway.

Author: agrare

.github/workflows/ci.yaml

@@ -8,7 +8,7 @@ on:
   - cron: 0 0 * * *
 jobs:
   ci:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     strategy:
       matrix:
         ruby-version:

bin/before_install

@@ -3,9 +3,7 @@
 if [ -n "$CI" ]; then
   echo "== Installing system packages =="
   sudo apt-get update
-  sudo apt-get install -y libcurl4-openssl-dev
-  sudo apt-add-repository --yes 'deb http://us.archive.ubuntu.com/ubuntu lunar universe'
-  sudo apt-get install -t lunar -y libqpid-proton11-dev
+  sudo apt-get install -y libcurl4-openssl-dev libqpid-proton11-dev
   echo
 
   # Enable the qpid_proton bundler group