aside: bump version of docker-in-docker

... just because.

Author: opajonk

.devcontainer/devcontainer-lock.json

@@ -6,9 +6,9 @@
       "integrity": "sha256:6e0bb2ce80caca1d94f44dab5d0653d88a1c00984e590adb7c6bce012d0ade6e"
     },
     "ghcr.io/devcontainers/features/docker-in-docker:2": {
-      "version": "2.12.2",
-      "resolved": "ghcr.io/devcontainers/features/docker-in-docker@sha256:842d2ed40827dc91b95ef727771e170b0e52272404f00dba063cee94eafac4bb",
-      "integrity": "sha256:842d2ed40827dc91b95ef727771e170b0e52272404f00dba063cee94eafac4bb"
+      "version": "2.12.4",
+      "resolved": "ghcr.io/devcontainers/features/docker-in-docker@sha256:7f32d985aac6929b4f37cf8a0bdb9196473e9e192281a3d708207a70633f83df",
+      "integrity": "sha256:7f32d985aac6929b4f37cf8a0bdb9196473e9e192281a3d708207a70633f83df"
     },
     "ghcr.io/devcontainers/features/git-lfs:1": {
       "version": "1.2.5",