update to latest kithe that lets us set batch size

Gemfile

@@ -74,7 +74,7 @@ gem "device_detector", "~> 1.0" # user-agent parsing we use for logging
 
 # temporary kithe indexing branch, for scihist_digicoll indexing branch, do not
 # intend to merge to master like this.
-gem 'kithe', "~> 2.2"
+gem 'kithe', "~> 2.3"
 # attr_son is a dependency of kithe, but we want to make sure it gets require'd directly
 # to avoid weird auto-loading issues.
 gem "attr_json", "~> 1.0"

Gemfile.lock

@@ -243,7 +243,7 @@ GEM
       railties (>= 4.0.0)
     gems (1.2.0)
     geocoder (1.6.7)
-    globalid (0.5.2)
+    globalid (1.0.0)
       activesupport (>= 5.0)
     google-api-client (0.53.0)
       google-apis-core (~> 0.1)
@@ -326,7 +326,7 @@ GEM
       activerecord
       kaminari-core (= 1.2.1)
     kaminari-core (1.2.1)
-    kithe (2.2.0)
+    kithe (2.3.0)
       attr_json (< 2.0.0)
       fastimage (~> 2.0)
       fx (>= 0.6.0, < 1)
@@ -599,7 +599,7 @@ GEM
     sprockets (4.0.2)
       concurrent-ruby (~> 1.0)
       rack (> 1, < 3)
-    sprockets-rails (3.4.0)
+    sprockets-rails (3.4.1)
       actionpack (>= 5.2)
       activesupport (>= 5.2)
       sprockets (>= 3.0.0)
@@ -709,7 +709,7 @@ DEPENDENCIES
   jbuilder (~> 2.5)
   jquery-rails (~> 4.3)
   kaminari (~> 1.2)
-  kithe (~> 2.2)
+  kithe (~> 2.3)
   listen (>= 3.0.5, < 3.2)
   lockbox
   lograge (< 2)