Update default ruby version to 2.5.9

openSUSE 15.2 switched to this ruby version.

.github/workflows/spec.yml

@@ -10,8 +10,6 @@ on:
 jobs:
   linters:
     runs-on: ubuntu-latest
-    env:
-      OSEM_RUBY_VERSION: 2.5.9
     steps:
       - uses: actions/checkout@v2
       - uses: ruby/setup-ruby@v1
@@ -26,7 +24,6 @@ jobs:
     name: spec
     env:
       OSEM_DB_ADAPTER: sqlite3
-      OSEM_RUBY_VERSION: 2.5.9
       RAILS_ENV: test
     strategy:
       matrix:

.gitignore

@@ -40,3 +40,4 @@ docker-compose.override.yml
 .buildconfig
 osem_development
 osem_test
+.ackrc

.ruby-version

@@ -1 +1 @@
-2.5.0
+2.5.9

Gemfile

@@ -2,7 +2,7 @@
 
 source 'https://rubygems.org'
 
-ruby ENV['OSEM_RUBY_VERSION'] || '2.5.8'
+ruby ENV['OSEM_RUBY_VERSION'] || '2.5.9'
 
 # rails-assets requires >= 1.8.4
 if Gem::Version.new(Bundler::VERSION) < Gem::Version.new('1.8.4')

Gemfile.lock

@@ -733,7 +733,7 @@ DEPENDENCIES
   whenever
 
 RUBY VERSION
-   ruby 2.5.8p224
+   ruby 2.5.9p229
 
 BUNDLED WITH
    1.17.3