Update gems & npm packages

Gemfile.lock

@@ -43,7 +43,7 @@ GEM
       minitest (~> 5.1)
       tzinfo (~> 1.1)
     arel (9.0.0)
-    ast (2.3.0)
+    ast (2.4.0)
     autoprefixer-rails (7.2.5)
       execjs
     babel-source (5.8.35)
@@ -53,9 +53,9 @@ GEM
     bindex (0.5.0)
     bootsnap (1.1.8)
       msgpack (~> 1.0)
-    bootstrap (4.0.0.beta3)
+    bootstrap (4.0.0)
       autoprefixer-rails (>= 6.0.3)
-      popper_js (>= 1.12.3, < 2)
+      popper_js (>= 1.12.9, < 2)
       sass (>= 3.5.2)
     builder (3.2.3)
     coderay (1.1.2)
@@ -102,10 +102,10 @@ GEM
       guard (>= 2.0.0)
       guard-compat (~> 1.0)
     http-parser-lite (0.6.0)
-    i18n (0.9.1)
+    i18n (0.9.3)
       concurrent-ruby (~> 1.0)
     iniparse (1.4.4)
-    invoker (1.5.5)
+    invoker (1.5.6)
       colorize (~> 0.8.1)
       dotenv (~> 2.0)
       em-proxy (~> 0.1)
@@ -132,7 +132,7 @@ GEM
     method_source (0.9.0)
     mini_mime (1.0.0)
     mini_portile2 (2.3.0)
-    minitest (5.11.1)
+    minitest (5.11.2)
     msgpack (1.2.2)
     nenv (0.3.0)
     newrelic_rpm (4.7.1.340)
@@ -152,7 +152,7 @@ GEM
     pry (0.11.3)
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
-    puma (3.11.0)
+    puma (3.11.2)
     rack (2.0.3)
     rack-proxy (0.6.3)
       rack
@@ -273,7 +273,7 @@ GEM
       activemodel (>= 5.0)
       bindex (>= 0.4.0)
       railties (>= 5.0)
-    webpacker (3.2.0)
+    webpacker (3.2.1)
       activesupport (>= 4.2)
       rack-proxy (>= 0.6.1)
       railties (>= 4.2)