[Snyk] Fix for 3 vulnerabilities

[Fkherif]

Snyk has created this PR to fix 3 vulnerabilities in the maven dependencies of this project.

Snyk changed the following file(s):

• pom.xml

Vulnerabilities that will be fixed with an upgrade:

	Issue	Score	Upgrade
	Denial of Service (DoS) SNYK-JAVA-COMFASTERXMLJACKSONCORE-7569538	721	Major version upgrade No Known Exploit
	Cross-site Scripting (XSS) SNYK-JAVA-ORGWEBJARS-7444596	688	org.webjars:bootstrap: 3.3.7 -> 4.0.0 Major version upgrade Proof of Concept
	Cross-site Scripting SNYK-JAVA-ORGWEBJARS-7444620	688	org.webjars:bootstrap: 3.3.7 -> 4.0.0 Major version upgrade Proof of Concept

Vulnerabilities that could not be fixed

• Upgrade:
  • Could not upgrade org.springframework.boot:spring-boot-starter-web@1.3.8.RELEASE to org.springframework.boot:spring-boot-starter-web@2.0.0.RELEASE; Reason could not apply upgrade, dependency is managed externally ; Location: https://maven-central.storage-download.googleapis.com/maven2/org/springframework/boot/spring-boot-dependencies/1.3.8.RELEASE/spring-boot-dependencies-1.3.8.RELEASE.pom

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[!IMPORTANT]

• Check the changes in this PR to ensure they won't cause issues with your project.
• Max score is 1000. Note that the real score may have changed since the PR was raised.
• This PR was automatically created by Snyk using the credentials of a real user.

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Learn how to fix vulnerabilities with free interactive lessons:

🦉 Denial of Service (DoS) 🦉 Cross-site Scripting (XSS)