Merge branch 'ppm' into 'master'

jobs: Restrict ppm to arm64

See merge request Librem5/deb-build-jobs!215

jobs.yml

@@ -349,6 +349,7 @@ plymouth-theme-librem5:
   branch: 'master'
 ppm:
   url: https://source.puri.sm/Librem5/debs/ppm.git
+  archs: ['aarch64']
   dists: ['buster']
   branch: pureos/amber-phone
 purple-mm-sms: