bump activerecord-nulldb-adapter

Gemfile

@@ -303,7 +303,7 @@ platforms :mri, :mingw, :x64_mingw do
   end
 
   # Support application loading when no database exists yet.
-  gem 'activerecord-nulldb-adapter', '~> 0.7.0'
+  gem 'activerecord-nulldb-adapter', '~> 0.8.0'
 
   # Have application level locks on the database to have a mutex shared between workers/hosts.
   # We e.g. employ this to safeguard the creation of journals.

Gemfile.lock

@@ -238,8 +238,8 @@ GEM
       activesupport (= 6.1.4.1)
     activerecord-import (1.2.0)
       activerecord (>= 3.2)
-    activerecord-nulldb-adapter (0.7.0)
-      activerecord (>= 5.2.0, < 6.3)
+    activerecord-nulldb-adapter (0.8.0)
+      activerecord (>= 5.2.0, < 7.1)
     activerecord-session_store (2.0.0)
       actionpack (>= 5.2.4.1)
       activerecord (>= 5.2.4.1)
@@ -971,7 +971,7 @@ DEPENDENCIES
   actionpack-xml_parser (~> 2.0.0)
   activemodel-serializers-xml (~> 1.0.1)
   activerecord-import (~> 1.2.0)
-  activerecord-nulldb-adapter (~> 0.7.0)
+  activerecord-nulldb-adapter (~> 0.8.0)
   activerecord-session_store (~> 2.0.0)
   acts_as_list (~> 1.0.1)
   acts_as_tree (~> 2.9.0)