Security problem in Calibre-Web -> Update to 0.6.7

[OzzieIsaacs]

There was security bug found in Calibre-Web. I created a release with version 0.6.7 to address the issue.
The problem could be avoided in older releases by generating an own session key and providing it to Calibre-Web via environment variable 'SECRET_KEY'

Is tracked under: CVE-2020-12627
Relevant Pull request: janeczku/calibre-web#1337

[aptalca]

@OzzieIsaacs thanks for the heads up. 0.6.7 is already building: https://ci.linuxserver.io/blue/organizations/jenkins/Docker-Pipeline-Builders%2Fdocker-calibre-web/detail/master/238/pipeline

[CHBMB]

Built and tested 👍