ci: switch release runner to ubuntu-24.04 to unblock multi-arch build (#246)

* ci: pin binfmt to qemu-v8.1.5 to fix arm64 segfault

The default binfmt image bundled with docker/setup-qemu-action@v3 ships
an older QEMU that segfaults inside glibc post-install hooks
(libc-bin's ldconfig) when emulating arm64 on the GitHub Actions runner
kernel. Pinning to tonistiigi/binfmt:qemu-v8.1.5 uses a newer QEMU
build that handles the syscall path correctly.

Caused the v0.1.0 release run to fail in the arm64 builder during
apt-get install of build-essential.

* ci: switch release runner from ubuntu-22.04 to ubuntu-24.04

Reverts the binfmt pin from the previous commit in favor of matching
the runner that prod-ci.yaml had been using successfully (ubuntu-latest
== 24.04 today). The 22.04 runner's older binfmt/QEMU defaults segfault
inside glibc's ldconfig when emulating arm64 against debian:bullseye;
24.04 handles it. The old prod-ci.yaml's last green multi-arch run was
2026-04-29 on ubuntu-latest, which is why this only surfaced now.

Author: mayankpande88

.github/workflows/release.yml

@@ -11,7 +11,7 @@ env:
 
 jobs:
   build:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     permissions:
       contents: write
       packages: write