chore(deps): pin tccr.io/tccr/devcontainer docker tag to df84b68 (#29838)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
|
[tccr.io/tccr/devcontainer](https://redirect.github.com/truecharts/public)
| image | pinDigest | -> `df84b68` |

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.devcontainer/devcontainer.json

@@ -1,7 +1,7 @@
 {
     "$schema": "https://raw.githubusercontent.com/devcontainers/spec/main/schemas/devContainer.schema.json",
     "name": "TrueCharts",
-    "image": "tccr.io/tccr/devcontainer:v1.0.0",
+    "image": "tccr.io/tccr/devcontainer:v1.0.0@sha256:df84b68867e9e22b73450a00d8f6ad57f67e301da279fcce798e4e408888e1be",
     "initializeCommand": "docker pull tccr.io/tccr/devcontainer:v1.0.0",
     "postCreateCommand": {
       "setup": "bash ${containerWorkspaceFolder}/.devcontainer/postCreateCommand.sh"