Bump pangeo/base-image from 2024.06.28 to 2024.09.11 in /.devcontainer (#297)

Bumps pangeo/base-image from 2024.06.28 to 2024.09.11.

---
updated-dependencies:
- dependency-name: pangeo/base-image
  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]

.devcontainer/Dockerfile

@@ -1 +1 @@
-FROM pangeo/base-image:2024.06.28
+FROM pangeo/base-image:2024.09.11