ci.yml: disable armv6 tests

Upgrading run-on-arch-action to v3.0.0 fixed crashes in
other-arch-build-and-test that were apparently caused by a QEMU bug, but
there still remains a crash in the armv6 tests due to "Illegal
instruction".  It remains even if all the ARM-optimized code is
disabled.  Disable the armv6 tests for now.

Author: ebiggers

.github/workflows/ci.yml

@@ -26,8 +26,8 @@ jobs:
     strategy:
       matrix:
         include:
-        - { arch: armv6, distro: bookworm, compiler: gcc }
-        - { arch: armv6, distro: bookworm, compiler: clang }
+        # - { arch: armv6, distro: bookworm, compiler: gcc }
+        # - { arch: armv6, distro: bookworm, compiler: clang }
         - { arch: armv7, distro: bookworm, compiler: gcc }
         - { arch: armv7, distro: bookworm, compiler: clang }
         - { arch: aarch64, distro: bookworm, compiler: gcc }