Update dependency image_processing to v2

Author: renovate[bot]

Gemfile

@@ -46,7 +46,7 @@ gem "civil_service", github: "neinteractiveliterature/civil_service", branch: "n
 
 # File uploading
 gem "aws-sdk-s3"
-gem "image_processing", "~> 1.2"
+gem "image_processing", "~> 2.0"
 gem "ruby-vips"
 
 # Filthy lucre

Gemfile.lock

@@ -328,9 +328,7 @@ GEM
       logger
       ostruct
     ice_cube (0.17.0)
-    image_processing (1.14.0)
-      mini_magick (>= 4.9.5, < 6)
-      ruby-vips (>= 2.0.17, < 3)
+    image_processing (2.0.2)
     io-console (0.8.2)
     irb (1.18.0)
       pp (>= 0.6.0)
@@ -370,7 +368,6 @@ GEM
     memory_profiler (1.1.0)
     method_source (1.0.0)
     mini_histogram (0.3.1)
-    mini_magick (4.13.2)
     mini_mime (1.1.5)
     minitest (6.0.6)
       drb (~> 2.0)
@@ -750,7 +747,7 @@ DEPENDENCIES
   graphql-rails_logger
   holidays
   icalendar
-  image_processing (~> 1.2)
+  image_processing (~> 2.0)
   liquid
   listen
   lograge