build: bump exif_stripper to 0.1.3

0.1.3 strips GPS data from XMP (including DJI drone positions), reads
TIFF descriptions, and no longer reads whole images into memory.

mix.exs

@@ -205,7 +205,7 @@ defmodule Pleroma.Mixfile do
       {:majic, "~> 1.2"},
       {:open_api_spex, "~> 3.22"},
       {:ecto_psql_extras, "~> 0.8"},
-      {:exif_stripper, "~> 0.1.2"},
+      {:exif_stripper, "~> 0.1.3"},
       {:vix, "~> 0.36"},
       {:elixir_make, "~> 0.7.8", override: true},
       {:blurhash, "~> 0.1.0", hex: :rinpatch_blurhash},