Bundle update in order to bump rack version

This is a superset of #1427, a Dependabot PR.
That PR fails because of an encryption issue, #1428.

Gemfile.lock

@@ -18,35 +18,35 @@ GEM
   remote: https://rubygems.org/
   specs:
     RedCloth (4.3.2)
-    actionmailer (6.1.7.2)
-      actionpack (= 6.1.7.2)
-      actionview (= 6.1.7.2)
-      activejob (= 6.1.7.2)
-      activesupport (= 6.1.7.2)
+    actionmailer (6.1.7.3)
+      actionpack (= 6.1.7.3)
+      actionview (= 6.1.7.3)
+      activejob (= 6.1.7.3)
+      activesupport (= 6.1.7.3)
       mail (~> 2.5, >= 2.5.4)
       rails-dom-testing (~> 2.0)
-    actionpack (6.1.7.2)
-      actionview (= 6.1.7.2)
-      activesupport (= 6.1.7.2)
+    actionpack (6.1.7.3)
+      actionview (= 6.1.7.3)
+      activesupport (= 6.1.7.3)
       rack (~> 2.0, >= 2.0.9)
       rack-test (>= 0.6.3)
       rails-dom-testing (~> 2.0)
       rails-html-sanitizer (~> 1.0, >= 1.2.0)
-    actionview (6.1.7.2)
-      activesupport (= 6.1.7.2)
+    actionview (6.1.7.3)
+      activesupport (= 6.1.7.3)
       builder (~> 3.1)
       erubi (~> 1.4)
       rails-dom-testing (~> 2.0)
       rails-html-sanitizer (~> 1.1, >= 1.2.0)
-    activejob (6.1.7.2)
-      activesupport (= 6.1.7.2)
+    activejob (6.1.7.3)
+      activesupport (= 6.1.7.3)
       globalid (>= 0.3.6)
-    activemodel (6.1.7.2)
-      activesupport (= 6.1.7.2)
-    activerecord (6.1.7.2)
-      activemodel (= 6.1.7.2)
-      activesupport (= 6.1.7.2)
-    activesupport (6.1.7.2)
+    activemodel (6.1.7.3)
+      activesupport (= 6.1.7.3)
+    activerecord (6.1.7.3)
+      activemodel (= 6.1.7.3)
+      activesupport (= 6.1.7.3)
+    activesupport (6.1.7.3)
       concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (>= 1.6, < 2)
       minitest (>= 5.1)
@@ -108,7 +108,7 @@ GEM
     ffi (1.15.5)
     globalid (1.1.0)
       activesupport (>= 5.0)
-    graphql (2.0.18)
+    graphql (2.0.19)
     graphql-batch (0.5.2)
       graphql (>= 1.10, < 3)
       promise.rb (~> 0.7.2)
@@ -179,10 +179,10 @@ GEM
     promise.rb (0.7.4)
     public_suffix (5.0.1)
     racc (1.6.2)
-    rack (2.2.6.3)
+    rack (2.2.6.4)
     rack-cors (2.0.0)
       rack (>= 2.0.0)
-    rack-test (2.0.2)
+    rack-test (2.1.0)
       rack (>= 1.3)
     rails-controller-testing (1.0.5)
       actionpack (>= 5.0.1.rc1)
@@ -193,9 +193,9 @@ GEM
       nokogiri (>= 1.6)
     rails-html-sanitizer (1.5.0)
       loofah (~> 2.19, >= 2.19.1)
-    railties (6.1.7.2)
-      actionpack (= 6.1.7.2)
-      activesupport (= 6.1.7.2)
+    railties (6.1.7.3)
+      actionpack (= 6.1.7.3)
+      activesupport (= 6.1.7.3)
       method_source
       rake (>= 12.2)
       thor (~> 1.0)