chore: Bump docker-in-docker to version 3 (#120)

dependabot failed again to parse the feature version. Hopefully the same
format as used for pre-commit works.

Author: lurtz

.devcontainer/devcontainer-lock.json

@@ -5,10 +5,10 @@
       "resolved": "ghcr.io/devcontainers-extra/features/pre-commit@sha256:6e0bb2ce80caca1d94f44dab5d0653d88a1c00984e590adb7c6bce012d0ade6e",
       "integrity": "sha256:6e0bb2ce80caca1d94f44dab5d0653d88a1c00984e590adb7c6bce012d0ade6e"
     },
-    "ghcr.io/devcontainers/features/docker-in-docker": {
-      "version": "2.16.1",
-      "resolved": "ghcr.io/devcontainers/features/docker-in-docker@sha256:ce078b7bf7d9ef3bcb9813b32103795d8d72172446890b64772cbe1dec6baafd",
-      "integrity": "sha256:ce078b7bf7d9ef3bcb9813b32103795d8d72172446890b64772cbe1dec6baafd"
+    "ghcr.io/devcontainers/features/docker-in-docker:3": {
+      "version": "3.0.1",
+      "resolved": "ghcr.io/devcontainers/features/docker-in-docker@sha256:ca2508495b01ba29eba93e8153772a2daa65eaa86471cc6863fe2a3d21933df9",
+      "integrity": "sha256:ca2508495b01ba29eba93e8153772a2daa65eaa86471cc6863fe2a3d21933df9"
     }
   }
-}
+}

.devcontainer/devcontainer.json

@@ -1,7 +1,7 @@
 {
     "image": "mcr.microsoft.com/devcontainers/javascript-node:4-24",
     "features": {
-        "ghcr.io/devcontainers/features/docker-in-docker": {
+        "ghcr.io/devcontainers/features/docker-in-docker:3": {
             "moby": "false" // does not work with Debian Trixie based images
         },
         "ghcr.io/devcontainers-extra/features/pre-commit:2": {