art: upgrade chroots to trixie

With trixie we can now use the same suite for all architectures.
Furthermore, GitHub restored 32-bit x86 syscall support in their
ubuntu-latest kernels, so there’s no need to pin the host os anymore.

For MIPS however this is the end; it is no longer supported in Debian.

Author: TheOneric

.github/workflows/art.yml

@@ -27,33 +27,25 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        arch: [amd64, s390x, arm64, mips64el]
-        suite: [bookworm]
-        chroot-rev: [10]
+        arch: [amd64, i386, s390x, arm64, riscv64]
+        suite: [trixie]
+        chroot-rev: [1]
         confopts: [""]
-        cflags: [""]
         include:
+          # Enable sanitisers for native build
+          - arch: amd64
+            sanity: sane?
+          # Change host arch to be native + enable sanitisers for arm64
+          - arch: arm64
+            host_os: ubuntu-24.04-arm
+            sanity: sane?
           # i386 needs some SSE usage enabled to get a bit-identical result (even without ASM).
           # This is due to different (higher) precision of 387 floating math (default for <=i686).
           # SSE2 was introduced in 2000 by Intel and is present in both 32bit and 64bit
           # CPUs from both AMD and Intel since 2003. Our ASM needs at least SSE2 anyway.
           - arch: i386
-            suite: bookworm
-            # 24.04’s kernel doesn't enable all 32bit compat options leading to segfaults
-            host_os: 'ubuntu-22.04'
             cflags: '-msse -msse2 -mfpmath=sse'
             sanity: sane?
-            chroot-rev: 11
-          - arch: arm64
-            host_os: ubuntu-24.04-arm
-            sanity: sane?
-          - arch: riscv64
-            suite: sid
-            port: no
-            chroot-rev: 12
-          # Enable sanitisers for native build
-          - arch: amd64
-            sanity: sane?
 
     steps:
       - name: Prepare System