Remove codacy, add puma

Gemfile.lock

@@ -76,8 +76,6 @@ GEM
       actionpack (>= 5.2)
       activemodel (>= 5.2)
     builder (3.2.4)
-    codacy-coverage (2.2.1)
-      simplecov
     coffee-rails (5.0.0)
       coffee-script (>= 2.2.0)
       railties (>= 5.2.0)
@@ -97,7 +95,6 @@ GEM
       warden (~> 1.2.3)
     diff-lcs (1.4.4)
     diffy (3.4.0)
-    docile (1.3.2)
     erubi (1.10.0)
     execjs (2.7.0)
     faraday (1.0.0)
@@ -158,6 +155,8 @@ GEM
     orm_adapter (0.5.0)
     popper_js (1.16.0)
     public_suffix (4.0.6)
+    puma (5.3.1)
+      nio4r (~> 2.0)
     racc (1.5.2)
     rack (2.2.3)
     rack-test (1.1.0)
@@ -214,10 +213,6 @@ GEM
       tilt
     sdoc (2.1.0)
       rdoc (>= 5.0)
-    simplecov (0.18.1)
-      docile (~> 1.1)
-      simplecov-html (~> 0.11.0)
-    simplecov-html (0.11.0)
     sprockets (4.0.2)
       concurrent-ruby (~> 1.0)
       rack (> 1, < 3)
@@ -261,7 +256,6 @@ DEPENDENCIES
   bootsnap
   bootstrap (~> 4.5.3)
   bootstrap_form (~> 4.5)
-  codacy-coverage
   coffee-rails (~> 5.0.0)
   devise (~> 4.8.0)
   diff-lcs
@@ -273,6 +267,7 @@ DEPENDENCIES
   mysql2 (~> 0.5.2)
   omniauth
   omniauth-github
+  puma (~> 5.0)
   rails (= 6.1.3.2)
   rails-controller-testing
   rails-i18n (~> 6.0.0)
@@ -288,4 +283,4 @@ DEPENDENCIES
   will_paginate-bootstrap4 (~> 0.2.2)
 
 BUNDLED WITH
-   2.1.4
+   2.2.17