[Snyk] Security upgrade tomcat from 8.5.34-jre8 to 8.5.97-jre8

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 Merge Request

• docker/otp-war/Dockerfile

We recommend upgrading to tomcat:8.5.97-jre8, as this image has only 13 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
	714	Integer Overflow or Wraparound SNYK-DEBIAN9-EXPAT-2331793	No Known Exploit
	729	Out-of-bounds Write SNYK-DEBIAN9-FREETYPE-1019584	Mature
	786	Out-of-Bounds SNYK-DEBIAN9-GLIBC-356506	Mature
	786	Out-of-Bounds SNYK-DEBIAN9-GLIBC-356506	Mature
	786	Out-of-Bounds SNYK-DEBIAN9-GLIBC-356506	Mature

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