[DRE-maint] Bug#914771: bundler: cannot load such file -- bundler-1.16.1/exe/bundle

[Andrew Lee (=?UTF-8?Q?=E6=9D=8E=E5=81=A5=E7=A7=8B?=)]

Package: bundler
Version: 1.16.1-3
Severity: normal

Dear Maintainer,

I'm preparing open-build-service 2.9 package for Debian. While that I
got to update some build-deps and noticed that there is an issue in
bundler package that the tests on `ruby-appraisal` reports:
```
│ Run tests for ruby2.5 from debian/ruby-tests.rake
│
└──────────────────────────────────────────────────────────────────────────────┘

RUBYLIB=/build/ruby-appraisal-2.2.0/debian/ruby-appraisal/usr/lib/ruby/vendor_ruby:.
GEM_PATH=debian/ruby-appraisal/usr/share/rubygems-integration/all:/var/lib/gems/2.5.0:/usr/lib/x86_64-linux-gnu/rubygems-integration/2.5.0:/usr/share/rubygems-integration/2.5.0:/usr/share/rubygems-integration/all
ruby2.5 -S rake -f debian/ruby-tests.rake
/usr/bin/ruby2.5 /usr/bin/rspec --pattern ./spec/\*\*/\*_spec.rb
bin/bundle:104:in `load': cannot load such file --
/usr/share/rubygems-integration/all/gems/bundler-1.16.1/exe/bundle
(LoadError)
```

We noticed this has been addressed upstream:
  https://github.com/bundler/bundler/issues/6537

And you can see, upstream said that it is fixed on September 18, and the
current version in Debian archive is from July 23. So there is probably
a need to be update.

If you agree, I may proceed a newer version(which one you prefer?) in
salsa.d.o for you to review.

Best regards,

-Andrew