Point to forked riiif for #2271

Gemfile

@@ -34,7 +34,7 @@ gem 'pry'
 gem 'oink'
 
 gem 'iiif-image-api', git: 'https://github.com/samvera-labs/iiif-image-api.git'
-gem 'riiif'
+gem 'riiif', git: 'https://github.com/BrumfieldLabs/riiif.git', branch: 'quote-paths-for-shell'
 gem 'iiif-presentation', git: 'https://github.com/benwbrum/osullivan', branch: 'service_is_array'
 
 gem 'omniauth-saml'

Gemfile.lock

@@ -1,3 +1,13 @@
+GIT
+  remote: https://github.com/BrumfieldLabs/riiif.git
+  revision: 2b9ca620a83a24980e4fcd2c227b55b6a6d096d4
+  branch: quote-paths-for-shell
+  specs:
+    riiif (2.3.0)
+      deprecation (>= 1.0.0)
+      iiif-image-api (>= 0.1.0)
+      railties (>= 4.2, < 7)
+
 GIT
   remote: https://github.com/benwbrum/osullivan
   revision: 814ac4ddabb2423de9d7e4f6b2dc8d8153317903
@@ -150,7 +160,7 @@ GEM
     crass (1.0.6)
     database_cleaner (1.8.5)
     debug_inspector (0.0.3)
-    deprecation (1.0.0)
+    deprecation (1.1.0)
       activesupport
     device_detector (1.0.5)
     devise (4.7.3)
@@ -358,10 +368,6 @@ GEM
     responders (3.0.1)
       actionpack (>= 5.0)
       railties (>= 5.0)
-    riiif (2.3.0)
-      deprecation (>= 1.0.0)
-      iiif-image-api (>= 0.1.0)
-      railties (>= 4.2, < 7)
     rmagick (4.1.2)
     roman (0.2.0)
     rspec-core (3.10.0)
@@ -536,7 +542,7 @@ DEPENDENCIES
   rails (= 6.0.3.2)
   rails-i18n (~> 6.0.0)
   recaptcha
-  riiif
+  riiif!
   rmagick
   rspec-rails
   rtl