[Snyk] Security upgrade tomcat from 9.0.40-jdk15-openjdk-slim to 9.0.44-jdk15-openjdk-slim

[snyk-bot]

Keeping your Docker base image up-to-date means you’ll benefit from security fixes in the latest version of your chosen image.

Changes included in this PR

• Dockerfile

We recommend upgrading to tomcat:9.0.44-jdk15-openjdk-slim, as this image has only 73 known vulnerabilities. To do this, merge this pull request, then verify your application still works as expected.

Some of the most important vulnerabilities in your base image include:

Severity	Priority Score / 1000	Issue	Exploit Maturity
	614	Integer Overflow or Wraparound SNYK-DEBIAN10-OPENSSL-1075326	No Known Exploit
	714	Buffer Overflow SNYK-DEBIAN10-OPENSSL-1569403	No Known Exploit
	614	Out-of-bounds Read SNYK-DEBIAN10-OPENSSL-1569406	No Known Exploit
	614	Out-of-bounds Write SNYK-DEBIAN10-P11KIT-1050833	No Known Exploit
	614	Integer Overflow or Wraparound SNYK-DEBIAN10-P11KIT-1050836	No Known Exploit

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[secure-code-warrior-for-github]

Micro-Learning Topic: Buffer overflow (Detected by phrase)

Matched on "Buffer Overflow"

What is this? (2min video)

A buffer overflow condition exists when a program attempts to put more data in a buffer than it can hold or when a program attempts to put data in a memory area past a buffer.

Try this challenge in Secure Code Warrior

Micro-Learning Topic: Integer overflow (Detected by phrase)

Matched on "Integer Overflow"

What is this? (2min video)

Integer overflow occurs when the result of arithmetic operation is greater than the maximum value the integer data type can store.
For example, if an integer data type allows integers up to two bytes or 16 bits in length (or an unsigned number up to decimal 65,535), and two integers are to be added together that will exceed the value of 65,535, the result will be integer overflow.

Try this challenge in Secure Code Warrior