packit: tweak the build targets

As suggested by @jannau in AsahiLinux#271 (comment)

Signed-off-by: Davide Cavalca <[email protected]>

.packit.yaml

@@ -24,20 +24,18 @@ jobs:
   project: packit-builds
   targets:
     - fedora-all-aarch64
-    - fedora-all-armhfp
-    - fedora-all-i386
-    - fedora-all-ppc64le
-    - fedora-all-s390x
-    - fedora-all-x86_64
+    - fedora-rawhide-i386
+    - fedora-rawhide-ppc64le
+    - fedora-rawhide-s390x
+    - fedora-rawhide-x86_64
 
 - job: copr_build
   trigger: pull_request
   owner: "@asahi"
   project: packit-builds
   targets:
     - fedora-all-aarch64
-    - fedora-all-armhfp
-    - fedora-all-i386
-    - fedora-all-ppc64le
-    - fedora-all-s390x
-    - fedora-all-x86_64
+    - fedora-rawhide-i386
+    - fedora-rawhide-ppc64le
+    - fedora-rawhide-s390x
+    - fedora-rawhide-x86_64