Upgrade symmetric-encryption gem & bundler (#732)

* Update bundler

* Upgrade symmetric_encryption

* Run standardrb --fix

* Remove comment & add TODO to gitignore

* Update ruby version in docker file for backend

.gitignore

@@ -11,4 +11,6 @@ dump.rdb
 .bundle
 frontend/.env
 
-.DS_Store
+.DS_Store
+
+TODO.md

backend/Dockerfile

@@ -1,4 +1,4 @@
-FROM ruby:3.0
+FROM ruby:3.1.3
 
 # set working directory
 WORKDIR /app
@@ -8,7 +8,7 @@ RUN apt-get update -qq && \
       apt-get install -y nodejs postgresql-client
 
 # install bundler
-RUN gem install bundler:2.1.4
+RUN gem install bundler:2.5.6
 
 # copy the Gemfile and Gemfile.lock to the container
 COPY Gemfile Gemfile.lock ./

backend/Gemfile.lock

@@ -448,7 +448,7 @@ GEM
       rubocop-performance (~> 1.18.0)
     standardrb (1.0.1)
       standard
-    symmetric-encryption (4.4.0)
+    symmetric-encryption (4.6.0)
       coercible (~> 1.0)
     thor (1.3.0)
     thread_safe (0.3.6)
@@ -547,4 +547,4 @@ RUBY VERSION
    ruby 3.1.3p185
 
 BUNDLED WITH
-   2.2.33
+   2.5.6