[Snyk] Security upgrade Newtonsoft.Json from 8.0.2 to 13.0.1

[jeme]

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 `nuget` dependencies of this project.

#### Changes included in this PR - Changes to the following files to upgrade the vulnerable dependencies to a fixed version: - DotJEM.Json.Index.Test/packages.config #### Vulnerabilities that will be fixed ##### With an upgrade: Severity | Priority Score (*) | Issue | Breaking Change | Exploit Maturity :-------------------------:|-------------------------|:-------------------------|:-------------------------|:-------------------------  | **768/1000**
**Why?** Proof of Concept exploit, Recently disclosed, Has a fix available, CVSS 7.5 | Insecure Defaults
[SNYK-DOTNET-NEWTONSOFTJSON-2774678](https://snyk.io/vuln/SNYK-DOTNET-NEWTONSOFTJSON-2774678) | Yes | Proof of Concept (*) Note that the real score may have changed since the PR was raised. 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/jeme/project/8ff08493-5041-443e-b649-e54963f972c7?utm_source=github&utm_medium=referral&page=fix-pr) 🛠 [Adjust project settings](https://app.snyk.io/org/jeme/project/8ff08493-5041-443e-b649-e54963f972c7?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":"cfb7dfef-5e26-4c85-9914-2dd36870bfcd","prPublicId":"cfb7dfef-5e26-4c85-9914-2dd36870bfcd","dependencies":[{"name":"Newtonsoft.Json","from":"8.0.2","to":"13.0.1"}],"packageManager":"nuget","projectPublicId":"8ff08493-5041-443e-b649-e54963f972c7","projectUrl":"https://app.snyk.io/org/jeme/project/8ff08493-5041-443e-b649-e54963f972c7?utm_source=github&utm_medium=referral&page=fix-pr","type":"auto","patch":[],"vulns":["SNYK-DOTNET-NEWTONSOFTJSON-2774678"],"upgrade":["SNYK-DOTNET-NEWTONSOFTJSON-2774678"],"isBreakingChange":true,"env":"prod","prType":"fix","templateVariants":["updated-fix-title","priorityScore"],"priorityScoreList":[768]}) --- **Learn how to fix vulnerabilities with free interactive lessons:** 🦉 [Learn about vulnerability in an interactive lesson of Snyk Learn.](https://learn.snyk.io?loc=fix-pr)

[blackduck-copilot[bot]]

Black Duck Security Report

Merging #29 into master will not change security risk.

Added Components

Clean: 1

Click here to see full report