Bump activesupport from 5.2.1 to 5.2.4.3 in /db

Bumps [activesupport](https://github.com/rails/rails) from 5.2.1 to 5.2.4.3.
- [Release notes](https://github.com/rails/rails/releases)
- [Changelog](https://github.com/rails/rails/blob/v6.0.3.1/activesupport/CHANGELOG.md)
- [Commits](rails/rails@v5.2.1...v5.2.4.3)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

db/Gemfile.lock

@@ -1,29 +1,29 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    activemodel (5.2.1)
-      activesupport (= 5.2.1)
-    activerecord (5.2.1)
-      activemodel (= 5.2.1)
-      activesupport (= 5.2.1)
+    activemodel (5.2.4.3)
+      activesupport (= 5.2.4.3)
+    activerecord (5.2.4.3)
+      activemodel (= 5.2.4.3)
+      activesupport (= 5.2.4.3)
       arel (>= 9.0)
-    activesupport (5.2.1)
+    activesupport (5.2.4.3)
       concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
     arel (9.0.0)
-    concurrent-ruby (1.0.5)
+    concurrent-ruby (1.1.7)
     diffy (3.2.1)
-    i18n (1.1.0)
+    i18n (1.8.5)
       concurrent-ruby (~> 1.0)
-    minitest (5.11.3)
+    minitest (5.14.1)
     pg (1.1.4)
     ridgepole (0.7.4)
       activerecord (>= 5.0.1, < 6)
       diffy
     thread_safe (0.3.6)
-    tzinfo (1.2.5)
+    tzinfo (1.2.7)
       thread_safe (~> 0.1)
 
 PLATFORMS