Update osbuild dependency commit ID

[schutzbot]

Updating osbuild dependency commit IDs to current main

Changes: osbuild/osbuild@81b34a8...b8cc0ab

[achilleas-k]

CS10 RPM build for osbuild at the specific commit failed. Restarted it now.

[achilleas-k]

CS9 runners (used for testing RHEL 7) failing to install osbuild because of our old friend selinux-policy:

Error: 
 Problem 1: cannot install the best candidate for the job
  - nothing provides selinux-policy-targeted >= 38.1.82-1.el9 needed by osbuild-selinux-187-1.20260706gitb8cc0ab.el9.x86_64 from osbuild
 Problem 2: problem with installed package selinux-policy-targeted-38.1.80-1.el9.noarch
  - package osbuild-187-1.20260706gitb8cc0ab.el9.x86_64 from osbuild requires (osbuild-selinux if selinux-policy-targeted), but none of the providers can be installed
  - package osbuild-selinux-174-1.el9.x86_64 from appstream requires osbuild = 174-1.el9, but none of the providers can be installed
  - cannot install both osbuild-174-1.el9.x86_64 from appstream and osbuild-187-1.20260706gitb8cc0ab.el9.x86_64 from osbuild
  - cannot install the best candidate for the job
  - nothing provides selinux-policy-targeted >= 38.1.82-1.el9 needed by osbuild-selinux-187-1.20260706gitb8cc0ab.el9.x86_64 from osbuild
 Problem 3: problem with installed package passt-selinux-0^20251210.gd04c480-3.el9.noarch
  - package passt-selinux-0^20251210.gd04c480-3.el9.noarch from @System requires selinux-policy-targeted, but none of the providers can be installed
  - package passt-selinux-0^20251210.gd04c480-3.el9.noarch from appstream requires selinux-policy-targeted, but none of the providers can be installed
  - package osbuild-187-1.20260706gitb8cc0ab.el9.x86_64 from osbuild requires (osbuild-selinux if selinux-policy-targeted), but none of the providers can be installed
  - package osbuild-selinux-174-1.el9.x86_64 from appstream requires osbuild = 174-1.el9, but none of the providers can be installed
  - cannot install both osbuild-174-1.el9.x86_64 from appstream and osbuild-187-1.20260706gitb8cc0ab.el9.x86_64 from osbuild
  - package osbuild-depsolve-dnf-187-1.20260706gitb8cc0ab.el9.x86_64 from osbuild requires osbuild = 187-1.20260706gitb8cc0ab.el9, but none of the providers can be installed
  - cannot install the best candidate for the job
  - nothing provides selinux-policy-targeted >= 38.1.82-1.el9 needed by osbuild-selinux-187-1.20260706gitb8cc0ab.el9.x86_64 from osbuild