Use Ubuntu 24.04 on Drone

Author: Flamefire

.drone.jsonnet

@@ -193,8 +193,8 @@ local windows_pipeline(name, image, environment, arch = "amd64") =
     ),
 
     linux_pipeline(
-        "Linux 23.04 GCC 13 32/64",
-        "cppalliance/droneubuntu2304:1",
+        "Linux 24.04 GCC 13 32/64",
+        "cppalliance/droneubuntu2404:1",
         { TOOLSET: 'gcc', COMPILER: 'g++-13', CXXSTD: '11,14,17,20,2b', ADDRMD: '32,64' },
         "g++-13-multilib",
     ),
@@ -333,8 +333,8 @@ local windows_pipeline(name, image, environment, arch = "amd64") =
     ),
 
     linux_pipeline(
-        "Linux 23.04 Clang 16",
-        "cppalliance/droneubuntu2304:1",
+        "Linux 24.04 Clang 16",
+        "cppalliance/droneubuntu2404:1",
         { TOOLSET: 'clang', COMPILER: 'clang++-16', CXXSTD: '11,14,17,20,2b' },
         "clang-16",
     ),