Bump puma from 4.3.5 to 4.3.8 (#43)

Bumps [puma](https://github.com/puma/puma) from 4.3.5 to 4.3.8.
- [Release notes](https://github.com/puma/puma/releases)
- [Changelog](https://github.com/puma/puma/blob/master/History.md)
- [Commits](puma/puma@v4.3.5...v4.3.8)

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

Gemfile

@@ -14,7 +14,7 @@ gem "rails",        "6.0.3.1"
 gem "bootsnap",     "1.4.6"
 gem "jbuilder",     "2.10.0"
 gem "pg",           "1.2.3"
-gem "puma",         "4.3.5"
+gem "puma",         "4.3.8"
 gem "rack-cors",    "1.1.1"
 gem "redis",        "4.1.3"
 gem "sass-rails",   "6.0.0"

Gemfile.lock

@@ -103,15 +103,15 @@ GEM
     mini_portile2 (2.4.0)
     minitest (5.14.1)
     msgpack (1.3.3)
-    nio4r (2.5.2)
+    nio4r (2.5.7)
     nokogiri (1.10.9)
       mini_portile2 (~> 2.4.0)
     parallel (1.19.1)
     parser (2.7.1.3)
       ast (~> 2.4.0)
     pg (1.2.3)
     public_suffix (4.0.5)
-    puma (4.3.5)
+    puma (4.3.8)
       nio4r (~> 2.0)
     rack (2.2.3)
     rack-cors (1.1.1)
@@ -230,7 +230,7 @@ DEPENDENCIES
   jbuilder (= 2.10.0)
   listen (>= 3.0.5, < 3.2)
   pg (= 1.2.3)
-  puma (= 4.3.5)
+  puma (= 4.3.8)
   rack-cors (= 1.1.1)
   rails (= 6.0.3.1)
   redis (= 4.1.3)