Rails app is using wrong bundler version? - ruby-on-rails

Question

I've a Rails app that needs to use bundler version
gem "bundler", ">= 2.2.17", "<= 2.2.30"
I've installed bundler version 2.2.30 using gem install bundler:2.2.30 --default. Running gem list bundler returns the following
*** LOCAL GEMS ***
bundler (default: 2.2.30)
but the issue is that bundler version returns a different version(2.1.2) than 2.2.30. It returns
Bundler version 2.1.2
which bundler gives
/Users/masroor/.rbenv/shims/bundler
and whenever I try to bundle the app using bundle _2.2.30_ install or try running rails server/console, it does not pick up the right bundler version(2.2.30) instead it uses 2.1.2
Trying to do bundle _2.2.30_ install fails with this error
Bundler could not find compatible versions for gem "bundler":
In Gemfile:
bundler (>= 2.2.17, <= 2.2.30)
Current Bundler version:
bundler (2.1.2)
This Gemfile requires a different version of Bundler.
Perhaps you need to update Bundler by running gem install bundler?
Could not find gem 'bundler (>= 2.2.17, <= 2.2.30)' in any of the relevant sources:
the local ruby installation
The gem env installation path does not contain the bundler gemspec against 2.1.2 bundler version.
Output of gem env
RubyGems Environment:
- RUBYGEMS VERSION: 3.1.2
- RUBY VERSION: 2.7.0 (2019-12-25 patchlevel 0) [x86_64-darwin19]
- INSTALLATION DIRECTORY: /Users/masroor/.rbenv/versions/2.7.0/lib/ruby/gems/2.7.0
- USER INSTALLATION DIRECTORY: /Users/masroor/.gem/ruby/2.7.0
- RUBY EXECUTABLE: /Users/masroor/.rbenv/versions/2.7.0/bin/ruby
- GIT EXECUTABLE: /usr/local/bin/git
- EXECUTABLE DIRECTORY: /Users/masroor/.rbenv/versions/2.7.0/bin
- SPEC CACHE DIRECTORY: /Users/masroor/.gem/specs
- SYSTEM CONFIGURATION DIRECTORY: /Users/masroor/.rbenv/versions/2.7.0/etc
- RUBYGEMS PLATFORMS:
- ruby
- x86_64-darwin-19
- GEM PATHS:
- /Users/masroor/.rbenv/versions/2.7.0/lib/ruby/gems/2.7.0
- /Users/masroor/.gem/ruby/2.7.0
- GEM CONFIGURATION:
- :update_sources => true
- :verbose => true
- :backtrace => false
- :bulk_threshold => 1000
- REMOTE SOURCES:
- https://rubygems.org/
- SHELL PATH:
- /Users/masroor/.rbenv/versions/2.7.0/bin
- /usr/local/Cellar/rbenv/1.2.0/libexec
- /usr/local/opt/mysql#5.7/bin
- /Users/masroor/.rbenv/shims
- /Users/masroor/.nvm/versions/node/v10.16.3/bin
- /usr/local/opt/mysql#5.7/bin
- /Users/masroor/.rbenv/shims
- /usr/local/bin
- /usr/bin
- /bin
- /usr/sbin
- /sbin
- /Library/Apple/usr/bin
- /Library/Apple/bin
The installed gemspecs for bundler, returned by ls /Users/masroor/.rbenv/versions/2.7.0/lib/ruby/gems/2.7.0/specifications/default/ | grep bundler are
bundler-2.2.30.gemspec
I'm using rbenv for ruby version management, running ruby -v returns
ruby 2.7.0p0 (2019-12-25 revision 647ee6f091) [x86_64-darwin19]
which ruby returns
/Users/masroor/.rbenv/shims/ruby
I tried to find files pertaining to bundler 2.1.2 in my filesystem with
find / -type f -name bundler | grep bundler | grep 2.1.2
and found the following
/System/Volumes/Data/Users/masroor/.rbenv/versions/2.7.0/lib/ruby/gems/2.7.0/gems/bundler-2.1.2/libexec/bundler
/Users/masroor/.rbenv/versions/2.7.0/lib/ruby/gems/2.7.0/gems/bundler-2.1.2/libexec/bundler
when I try to uninstall bundler version 2.1.2 with gem uninstall bundler:2.1.2 I get
Gem 'bundler' is not installed