Update dependencies

Gemfile.lock

@@ -159,7 +159,7 @@ GEM
       rails-dom-testing (>= 1, < 3)
       railties (>= 4.2.0)
       thor (>= 0.14, < 2.0)
-    json (2.7.6)
+    json (2.8.1)
     logger (1.6.1)
     loofah (2.23.1)
       crass (~> 1.0.2)
@@ -176,7 +176,7 @@ GEM
     mocha (2.5.0)
       ruby2_keywords (>= 0.0.5)
     msgpack (1.7.3)
-    net-http (0.4.1)
+    net-http (0.5.0)
       uri
     net-imap (0.5.0)
       date
@@ -208,7 +208,7 @@ GEM
     pghero (3.6.1)
       activerecord (>= 6.1)
     popper_js (2.11.8)
-    psych (5.1.2)
+    psych (5.2.0)
       stringio
     public_suffix (6.0.1)
     puma (6.4.3)
@@ -310,15 +310,15 @@ GEM
       actionpack (>= 6.1)
       activesupport (>= 6.1)
       sprockets (>= 3.0.0)
-    stringio (3.1.1)
+    stringio (3.1.2)
     thor (1.3.2)
     tilt (2.4.0)
     timeout (0.4.2)
     typhoeus (1.4.1)
       ethon (>= 0.9.0)
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
-    uri (0.13.1)
+    uri (1.0.0)
     useragent (0.16.10)
     web-console (4.2.1)
       actionview (>= 6.0.0)