Bump regex from 1.5.5 to 1.5.6 (#2086)

Bumps [regex](https://github.com/rust-lang/regex) from 1.5.5 to 1.5.6.
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a href="https://github.com/rust-lang/regex/blob/master/CHANGELOG.md">regex's changelog</a>.</em></p>
<blockquote>
<h1>1.5.6 (2022-05-20)</h1>
<p>This release includes a few bug fixes, including a bug that produced incorrect
matches when a non-greedy <code>?</code> operator was used.</p>
<ul>
<li>[BUG <a href="https://github-redirect.dependabot.com/rust-lang/regex/issues/680">#680</a>](<a href="https://github-redirect.dependabot.com/rust-lang/regex/issues/680">rust-lang/regex#680</a>):
Fixes a bug where <code>[[:alnum:][:^ascii:]]</code> dropped <code>[:alnum:]</code> from the class.</li>
<li>[BUG <a href="https://github-redirect.dependabot.com/rust-lang/regex/issues/859">#859</a>](<a href="https://github-redirect.dependabot.com/rust-lang/regex/issues/859">rust-lang/regex#859</a>):
Fixes a bug where <code>Hir::is_match_empty</code> returned <code>false</code> for <code>\b</code>.</li>
<li>[BUG <a href="https://github-redirect.dependabot.com/rust-lang/regex/issues/862">#862</a>](<a href="https://github-redirect.dependabot.com/rust-lang/regex/issues/862">rust-lang/regex#862</a>):
Fixes a bug where 'ab??' matches 'ab' instead of 'a' in 'ab'.</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="9aef5b1edc"><code>9aef5b1</code></a> 1.5.6</li>
<li><a href="2931b070fd"><code>2931b07</code></a> syntax: bump minimum regex-syntax version to 0.6.26</li>
<li><a href="b41bde0b85"><code>b41bde0</code></a> regex-syntax-0.6.26</li>
<li><a href="d98da65bb3"><code>d98da65</code></a> changelog: 1.5.6</li>
<li><a href="1c19619672"><code>1c19619</code></a> syntax: fix literal extraction for 'ab??'</li>
<li><a href="88a2a62d86"><code>88a2a62</code></a> syntax: fix 'is_match_empty' predicate</li>
<li><a href="72f09f1aeb"><code>72f09f1</code></a> syntax: fix ascii class union bug</li>
<li><a href="b5372864e2"><code>b537286</code></a> doc: fix some typos</li>
<li><a href="258bdf798a"><code>258bdf7</code></a> changelog: 1.5.5</li>
<li>See full diff in <a href="https://github.com/rust-lang/regex/compare/1.5.5...1.5.6">compare view</a></li>
</ul>
</details>
<br />


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</details>

Cargo.lock

@@ -1324,9 +1324,9 @@ dependencies = [
 
 [[package]]
 name = "regex"
-version = "1.5.5"
+version = "1.5.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1a11647b6b25ff05a515cb92c365cec08801e83423a235b51e231e1808747286"
+checksum = "d83f127d94bdbcda4c8cc2e50f6f84f4b611f69c902699ca385a39c3a75f9ff1"
 dependencies = [
  "aho-corasick",
  "memchr",
@@ -1350,9 +1350,9 @@ dependencies = [
 
 [[package]]
 name = "regex-syntax"
-version = "0.6.25"
+version = "0.6.26"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f497285884f3fcff424ffc933e56d7cbca511def0c9831a7f9b5f6153e3cc89b"
+checksum = "49b3de9ec5dc0a3417da371aab17d729997c15010e7fd24ff707773a33bddb64"
 
 [[package]]
 name = "regress"

boa_cli/Cargo.toml

@@ -19,7 +19,7 @@ rustyline-derive = "0.6.0"
 clap = { version = "3.1.18", features = ["derive"] }
 serde_json = "1.0.81"
 colored = "2.0.0"
-regex = "1.5.5"
+regex = "1.5.6"
 phf = { version = "0.10.1", features = ["macros"] }
 
 [target.x86_64-unknown-linux-gnu.dependencies]

boa_tester/Cargo.toml

@@ -19,7 +19,7 @@ serde = { version = "1.0.137", features = ["derive"] }
 serde_yaml = "0.8.24"
 serde_json = "1.0.81"
 bitflags = "1.3.2"
-regex = "1.5.5"
+regex = "1.5.6"
 once_cell = "1.12.0"
 colored = "2.0.0"
 fxhash = "0.2.1"