build-unit-test-docker: ubuntu: switch to noble numbat

The clang-17 package in manic is pinned back at 17.0.2, while the latest
release is 17.0.6.  There are some subtle bug fixes around type parsing,
which are especially useful for clang-format.  Upgrade the distro so we
can get these fixes.

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I53dce7c01bc04cbff193fd660984f2eb985be91a
diff --git a/scripts/build-unit-test-docker b/scripts/build-unit-test-docker
index a9b5cd5..44c3a8a 100755
--- a/scripts/build-unit-test-docker
+++ b/scripts/build-unit-test-docker
@@ -641,7 +641,7 @@
 )
 force_build = os.environ.get("FORCE_DOCKER_BUILD")
 is_automated_ci_build = os.environ.get("BUILD_URL", False)
-distro = os.environ.get("DISTRO", "ubuntu:mantic")
+distro = os.environ.get("DISTRO", "ubuntu:noble")
 branch = os.environ.get("BRANCH", "master")
 ubuntu_mirror = os.environ.get("UBUNTU_MIRROR")
 http_proxy = os.environ.get("http_proxy")