Update parser requirement from ~> 2.5 to >= 2.5, < 4.0 in /common

[dependabot-preview]

Updates the requirements on parser to permit the latest version.

Changelog

Sourced from parser's changelog.

v2.7.2.0 (2020-10-06)

API modifications:

• Bump 2.7 branch to 2.7.2 (#748) (Koichi ITO)

v2.7.1.5 (2020-09-24)

API modifications:

• right assignment: use existing AST node types (#738) (#739) (Marc-André Lafortune)
• ruby28.y -> ruby30.y (#729) (Vladimir Dementyev)

Features implemented:

• Optimize Range#column_range (#741) (Marc-André Lafortune)
• ruby30.y: reject endless setter. (#736) (Ilya Bylich)
• ruby28.y: reject assignment to numparam. (#725) (Ilya Bylich)
• emit "endless method def" as :def node. (#716) (Ilya Bylich)

Bugs fixed:

• rename 2.8 to 3.0 everywhere (#732) (Ilya Bylich)
• test_current.rb: 2.8 -> 3.0 (#731) (Vladimir Dementyev)
• Parser#parse returns nil instead of false if error is thrown (#722) (Marc-André Lafortune)
• unify locations for normal and endless method definition (#718) (Marc-André Lafortune)
• ruby27.y: accept const names as hash keys for pattern matching (#717) (Koichi ITO)
• Fix locations for alias / undef nodes with internal symbols (#715) (Marc-André Lafortune)

v2.7.1.4 (2020-06-19)

Features implemented:

• ruby28.y: add find pattern. (#714) (Ilya Bylich)
• lexer.rl: reject ->... and ->(...) with the same error. (#713) (Ilya Bylich)
• ruby28.y: accept leading args before forward arg. (#712) (Ilya Bylich)
• Added emit_forward_arg compatibility flag. (#710) (Ilya Bylich)
• ruby28.y: include entire lambda expr in lambda rule. (#708) (Ilya Bylich)
• ruby28.y: extracted excessed_comma rule. (#706) (Ilya Bylich)
• Source::TreeRewriter: Improved merging and representations (#703) (Marc-André Lafortune)

Bugs fixed:

• ruby*.y: fixed context inside lambda args and module. (#709) (Ilya Bylich)

v2.7.1.3 (2020-05-26)

API modifications:

• fixed all warnings. tests are running in verbose mode now. (#685) (Ilya Bylich)

Features implemented:

• ruby-[parse, rewrite]: add legacy switches (#699) (Marc-André Lafortune)

Commits

• c847202 Update changelog.
• 8d81185 Bump version.
• 6337d7b * Bump 2.7 branch to 2.7.2 (#748)
• f4ffb5b Simplify code (#747)
• 4ac776e test older parsers don't throw non-syntax errors on new syntax (#746)
• a70ed2a Drop git in gemspec (#745)
• 32784d8 Update changelog.
• 7015877 Update changelog.
• 07e76a8 Bump version.
• f925b97 Exclude .gitignore from the package to support vendoring. (#743)
• Additional commits viewable in compare view

Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting @dependabot rebase.

---

Dependabot commands and options

You can trigger Dependabot actions by commenting on this PR:

• @dependabot rebase will rebase this PR
• @dependabot recreate will recreate this PR, overwriting any edits that have been made to it
• @dependabot merge will merge this PR after your CI passes on it
• @dependabot squash and merge will squash and merge this PR after your CI passes on it
• @dependabot cancel merge will cancel a previously requested merge and block automerging
• @dependabot reopen will reopen this PR if it is closed
• @dependabot close will close this PR and stop Dependabot recreating it. You can achieve the same result by closing it manually
• @dependabot ignore this major version will close this PR and stop Dependabot creating any more for this major version (unless you reopen the PR or upgrade to it yourself)
• @dependabot ignore this minor version will close this PR and stop Dependabot creating any more for this minor version (unless you reopen the PR or upgrade to it yourself)
• @dependabot ignore this dependency will close this PR and stop Dependabot creating any more for this dependency (unless you reopen the PR or upgrade to it yourself)
• @dependabot badge me will comment on this PR with code to add a "Dependabot enabled" badge to your readme

Additionally, you can set the following in the .dependabot/config.yml file in this repo:

• Update frequency
• Automerge options (never/patch/minor, and dev/runtime dependencies)
• Out-of-range updates (receive only lockfile updates, if desired)
• Security updates (receive only security updates, if desired)

[dependabot-preview]

Dependabot tried to add @greysteil as a reviewer to this PR, but received the following error from GitHub:

POST https://api.github.com/repos/Metaswitch/dependabot-core/pulls/144/requested_reviewers: 422 - Reviews may only be requested from collaborators. One or more of the users or teams you specified is not a collaborator of the Metaswitch/dependabot-core repository. // See: https://docs.github.com/rest/reference/pulls#request-reviewers-for-a-pull-request