fix restic --stdin-filename option

3 jobs for master in 1 minute and 46 seconds (queued for 1 second)
Status Job ID Name Coverage
  Build Src
passed #5691
build:src

00:00:20

 
  Build Pkg
passed #5692
build:pkg

00:01:03

 
  Upload
passed #5693
upload:pkg

00:00:23