Adopt new Solidus default branch

Ref. solidusio/solidus#5042

.circleci/config.yml

@@ -62,7 +62,7 @@ jobs:
  bin/dummy-app
  environment:
  FRONTEND: starter
- SOLIDUS_BRANCH: master
+ SOLIDUS_BRANCH: main
  - save_cache:
  key: solidus-stripe-gems-v1-{{ checksum "/tmp/.tool-versions" }}
  paths:

README.md

@@ -178,7 +178,7 @@ In order to map these concepts SolidusStripe will match states in a slightly une
 Reference:
 
 - https://stripe.com/docs/payments/intents?intent=payment
-- https://github.com/solidusio/solidus/blob/master/core/lib/spree/core/state_machines/payment.rb
+- https://github.com/solidusio/solidus/blob/main/core/lib/spree/core/state_machines/payment.rb
 
 ## Development
 

bin/dummy-app

@@ -22,7 +22,7 @@ echo "gem 'simplecov', '~> 0.22', require: false" >> Gemfile
 echo "gem 'simplecov-cobertura', require: false" >> Gemfile
 unbundled bundle install
 
-unbundled bundle add solidus --github solidusio/solidus --branch "${SOLIDUS_BRANCH:-master}" --version '> 0.a'
+unbundled bundle add solidus --github solidusio/solidus --branch "${SOLIDUS_BRANCH:-main}" --version '> 0.a'
 unbundled bundle exec rake db:drop db:create
 unbundled bundle exec rails generate solidus:install --auto-accept --payment-method=none --no-seed --no-sample "$@"
 unbundled bundle add $extension_name --path ..

bin/rails-new

@@ -39,7 +39,7 @@ else
 
  cd "$app_path"
  unbundled bundle add listen --group development
- unbundled bundle add solidus --github solidusio/solidus --branch "${BRANCH:-master}" --version '> 0.a'
+ unbundled bundle add solidus --github solidusio/solidus --branch "${BRANCH:-main}" --version '> 0.a'
  unbundled bundle exec rake db:drop db:create
  unbundled bundle exec rails generate solidus:install --auto-accept --payment-method=none
  cd "${root_path}"