[Snyk] Security upgrade @mdx-js/mdx from 1.6.22 to 2.0.0

[travi]

This PR was automatically created by Snyk using the credentials of a real user.

Snyk has created this PR to fix one or more vulnerable packages in the `npm` dependencies of this project.

#### Changes included in this PR - Changes to the following files to upgrade the vulnerable dependencies to a fixed version: - package.json - package-lock.json #### Vulnerabilities that will be fixed ##### With an upgrade: Severity | Priority Score (*) | Issue | Breaking Change | Exploit Maturity :-------------------------:|-------------------------|:-------------------------|:-------------------------|:-------------------------  | **658/1000**
**Why?** Proof of Concept exploit, Recently disclosed, Has a fix available, CVSS 5.3 | Regular Expression Denial of Service (ReDoS)
[SNYK-JS-SEMVER-3247795](https://snyk.io/vuln/SNYK-JS-SEMVER-3247795) | Yes | Proof of Concept (*) Note that the real score may have changed since the PR was raised.

Commit messages

Package name: @mdx-js/mdx

The new version differs by 30 commits.

• bf7deab v2.0.0-next.5
• 5c15a00 fix(remark-mdx): move remark-stringify to deps (#1190)
• f59b174 Make type test run in their own action, closes #1172 (#1179)
• 9ac9755 docs(typescript): document how to use mdx 2 with typescript (#1181)
• 42077e4 ci(github): update github actions to latest versions (#1180)
• cc95646 ci(github): update github actions and dtslint to latest (#1178)
• 6098d94 Remove deprecated plugin options, fixes #718 (#1174)
• 0da2fcf Specify pre-dist-tag
• e1b45e3 v2.0.0-next.4
• 649dbd8 Implement inline link serialization that doesn't wrap them in angle (#1171)
• d08c5b6 Make testing matrix simpler (#1173)
• d0059c8 v2.0.0-next.3
• fa091d2 v2.0.0-next.2
• 7829b88 Move publish to its own action
• afd60c2 Break out linting into its own action
• 3ca8e0a Fix linting (#1161)
• 577d48f Fix some linting
• db93304 Improve export name extraction for shortcode generation (#1160)
• ea9970a Bump deps, fix core-js version in babel configs
• 166fd9d v2.0.0-next.1
• 569f82f Make preid next to match dist tag
• a3d8f08 types: add types to test utils (#1083)
• e2eb4ee types: add typescript typings for remark-mdx, remark-mdx-remove-exports, remark-mdx-remove-imports, @ mdx-js/util (#1082)
• 65af47c Break three main tests into their own scripts

See the full diff

Check the changes in this PR to ensure they won't cause issues with your project. ------------ **Note:** *You are seeing this because you or someone else with access to this repository has authorized Snyk to open fix PRs.* For more information: 🧐 [View latest project report](https://app.snyk.io/org/travi-org/project/a027532e-7fa9-4869-a752-a5c47e77deaf?utm_source=github&utm_medium=referral&page=fix-pr) 🛠 [Adjust project settings](https://app.snyk.io/org/travi-org/project/a027532e-7fa9-4869-a752-a5c47e77deaf?utm_source=github&utm_medium=referral&page=fix-pr/settings) 📚 [Read more about Snyk's upgrade and patch logic](https://support.snyk.io/hc/en-us/articles/360003891078-Snyk-patches-to-fix-vulnerabilities) [//]: # (snyk:metadata:{"prId":"7327f1cd-b4fc-4c59-b7fe-9636ba2a8217","prPublicId":"7327f1cd-b4fc-4c59-b7fe-9636ba2a8217","dependencies":[{"name":"@mdx-js/mdx","from":"1.6.22","to":"2.0.0"}],"packageManager":"npm","projectPublicId":"a027532e-7fa9-4869-a752-a5c47e77deaf","projectUrl":"https://app.snyk.io/org/travi-org/project/a027532e-7fa9-4869-a752-a5c47e77deaf?utm_source=github&utm_medium=referral&page=fix-pr","type":"auto","patch":[],"vulns":["SNYK-JS-SEMVER-3247795"],"upgrade":["SNYK-JS-SEMVER-3247795"],"isBreakingChange":true,"env":"prod","prType":"fix","templateVariants":["updated-fix-title","priorityScore"],"priorityScoreList":[658],"remediationStrategy":"vuln"}) --- **Learn how to fix vulnerabilities with free interactive lessons:** 🦉 [Regular Expression Denial of Service (ReDoS)](https://learn.snyk.io/lessons/redos/javascript/?loc=fix-pr)

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