chore(deps): bump ubuntu from 7229784 to 6015f66 in /containers/gvm (#767)

Bumps ubuntu from `7229784` to `6015f66`.

---
updated-dependencies:
- dependency-name: ubuntu
  dependency-version: 6015f66923d7afbc53558d7ccffd325d43b4e249f41a6e93eef074c9505d2233
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

containers/gvm/Dockerfile

@@ -1,7 +1,7 @@
 # syntax=docker/dockerfile:1-labs
 
 # base: ubuntu 22.04
-FROM ubuntu@sha256:72297848456d5d37d1262630108ab308d3e9ec7ed1c3286a32fe09856619a782
+FROM ubuntu@sha256:6015f66923d7afbc53558d7ccffd325d43b4e249f41a6e93eef074c9505d2233
 
 LABEL org.opencontainers.image.vendor=Elide
 LABEL org.opencontainers.image.title="Elide Cloud: GVM21 Base"