packit: Change the trigger and fedora branch

fedora-branch has to be set to all so even rawhide updates
are propagated.

Also change trigger: from commit to koji_build.

Signed-off-by: Anusha Srivatsa <asrivats@redhat.com>

.packit.yaml

@@ -13,9 +13,9 @@ jobs:
       - vulkan-utility-libraries
 
   - job: bodhi_update
-    trigger: commit
+    trigger: koji_build 
     dist_git_branches:
-      - fedora-branched
+      - fedora-all
     sidetag_group: vulkan-sdk-releases
     dependencies:
       - spirv-headers