Bump vscode/devcontainers/base in /ubuntu

Bumps vscode/devcontainers/base from 1.1.4-ubuntu22.04 to 1.1.5-ubuntu22.04.

---
updated-dependencies:
- dependency-name: vscode/devcontainers/base
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

ubuntu/Dockerfile

@@ -1,4 +1,4 @@
-FROM mcr.microsoft.com/vscode/devcontainers/base:1.1.4-ubuntu22.04
+FROM mcr.microsoft.com/vscode/devcontainers/base:1.1.5-ubuntu22.04
 
 # We need to run this as root then switch to vscode vs. having everything in the same RUN command