Bump regex from 0.2.11 to 1.1.9

[dependabot-preview]

Bumps regex from 0.2.11 to 1.1.9.

Release notes

Sourced from regex's releases.

1.0.0

This release marks the 1.0 release of regex.

While this release includes some breaking changes, most users of older versions
of the regex library should be able to migrate to 1.0 by simply bumping the
version number. The important changes are as follows:

• We adopt Rust 1.20 as the new minimum supported version of Rust for regex.
  We also tentativley adopt a policy that permits bumping the minimum supported
  version of Rust in minor version releases of regex, but no patch releases.
  That is, with respect to semver, we do not strictly consider bumping the
  minimum version of Rust to be a breaking change, but adopt a conservative
  stance as a compromise.
• Octal syntax in regular expressions has been disabled by default. This
  permits better error messages that inform users that backreferences aren't
  available. Octal syntax can be re-enabled via the corresponding option on
  RegexBuilder.
• (?-u:\B) is no longer allowed in Unicode regexes since it can match at
  invalid UTF-8 code unit boundaries. (?-u:\b) is still allowed in Unicode
  regexes.
• The From<regex_syntax::Error> impl has been removed. This formally removes
  the public dependency on regex-syntax.
• A new feature, use_std, has been added and enabled by default. Disabling
  the feature will result in a compilation error. In the future, this may
  permit us to support no_std environments (w/ alloc) in a backwards
  compatible way.

For more information and discussion, please see
1.0 release tracking issue.

Changelog

Sourced from regex's changelog.

1.1.9 (2019-07-06)

This release contains a bug fix that caused regex's tests to fail, due to a
dependency on an unreleased behavior in regex-syntax.

• [BUG #593](https://github-redirect.dependabot.com/rust-lang/regex/issues/593):
  Move an integration-style test on error messages into regex-syntax.

1.1.8 (2019-07-04)

This release contains a few small internal refactorings. One of which fixes
an instance of undefined behavior in a part of the SIMD code.

Bug fixes:

• [BUG #545](https://github-redirect.dependabot.com/rust-lang/regex/issues/545):
  Improves error messages when a repetition operator is used without a number.
• [BUG #588](https://github-redirect.dependabot.com/rust-lang/regex/issues/588):
  Removes use of a repr(Rust) union used for type punning in the Teddy matcher.
• [BUG #591](https://github-redirect.dependabot.com/rust-lang/regex/issues/591):
  Update docs for running benchmarks and improve failure modes.

1.1.7 (2019-06-09)

This release fixes up a few warnings as a result of recent deprecations.

1.1.6 (2019-04-16)

This release fixes a regression introduced by a bug fix (for
[BUG #557](https://github-redirect.dependabot.com/rust-lang/regex/issues/557)) which could cause
the regex engine to enter an infinite loop. This bug was originally
reported against ripgrep.

1.1.5 (2019-04-01)

This release fixes a bug in regex's dependency specification where it requires
a newer version of regex-syntax, but this wasn't communicated correctly in the
Cargo.toml. This would have been caught by a minimal version check, but this
check was disabled because the rand crate itself advertises incorrect
dependency specifications.

Bug fixes:

• [BUG #570](https://github-redirect.dependabot.com/rust-lang/regex/pull/570):
  Fix regex-syntax minimal version.

... (truncated)

Commits

• df23d5a 1.1.9
• 62b7b50 regex-syntax-0.6.8
• 886a7e7 syntax: move error test to syntax crate
• 5b773b1 1.1.8
• 1bf628d changelog: 1.1.8
• 3ab963e bench: improve error handling for benchmark script
• 79809ce doc: update instructions for running benchmarks
• 9f701e3 teddy: make u8x16 and u8x32 have vector call ABI
• 0a5bedd bench: slim down compile script
• f43beb3 exec: switch to Aho-Corasick's leftmost-first mode
• Additional commits viewable in compare view

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