BB2-4845: Update gnutls

[JamesDemeryNava]

JIRA Ticket:
BB2-4845

What Does This PR Do?

Updates the server Dockerfile to have libgnutls30:arm64 equal to 3.7.9-2+deb12u7

What Should Reviewers Watch For?

If you're reviewing this PR, please check for these things in particular:

Validation

• Pull down the branch and cd into the server directory
  • Run docker build -t dockerfile-root .
  • Exec into running container: docker run -it docker.io/library/dockerfile-root:latest /bin/bash
  • Run dpkg -l | grep gnutls
  • Confirm you see libgnutls30:arm64 equal to 3.7.9-2+deb12u7
• Build the project and successfully go through an auth flow at localhost:3000

[bwang-icf]

Verified with local run