Update spring requirement from ~> 4.1.1 to ~> 4.2.0

[dependabot]

Updates the requirements on spring to permit the latest version.

Changelog

Sourced from spring's changelog.

4.2.0

• Added Spring.reset_on_env to define environment variables which should cause spring to reload when they change.
• Added Spring.spawn_on_en to define environment variables that should cause spring to start a distinct server.
• Better handle a case where the server could hang.

4.1.3

• Bring back Spring::Watcher::Abstract#synchronize method to fix compatibility with spring-watcher-listen.

4.1.2

• Drop dependency on mutex_m. Avoid issues with loading the wrong version before bundler kicks in.

4.1.1

• Fix a small compatibility issue with Ruby 3.2 causing Kernel#raise to not accept a cause.

4.1.0

• Fix bug which makes commands to freeze when the Rails application is writing to STDERR.
• Fix rails db:system:change command failure issue.
• Defer digest loading.
• Add support for SPRING_QUIET environment variable.

4.0.0

• Stop requiring set before bundler can select the proper version. This could result in already defined constant warnings during boot (#659).
• Require Ruby 2.7.
• Require Rails 6.0.

3.1.1

• Fix compatibility issues with code that raises exceptions with frozen backtraces.
• Better support Ruby 3.0.

3.1.0

• Fix bug which makes rails consoles to hang at exit when multiple of them are open (#647).
• Fix support to gems.rb file.
• Ensure bundler is required when used.
• Support rails db:* tasks.
• Check that app preload was successful before sending a command.

3.0.0

• Require applications to have reloading enabled in the managed environments.
• Require Ruby 2.5.
• Require Rails 5.2.

... (truncated)

Commits

• cf107a5 Release 4.2.0
• dee2179 Merge pull request #709 from gmcgibbon/fix_ci
• fcea94c Remove incorrect version constraint
• 28715d7 Merge pull request #704 from gmcgibbon/reset_on_env
• 7e30570 Add Spring.reset_on_env
• db95d8d Merge pull request #705 from gmcgibbon/spawn_on_env
• d414b28 Add Spring.spawn_on_env
• fc30464 Merge pull request #708 from technicalpickles/timeout-around-verify-server-ve...
• fc6ef49 Handle when select succeeds, but there's nothing to gets
• d0011eb select on server socket before trying to read, so we can time it out
• Additional commits viewable in compare view

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