chore(deps): bump devenv from `5297dd9` to `a7ee656` (#21928)

Bumps [devenv](https://github.com/cachix/devenv) from `5297dd9` to `a7ee656`.
- [Release notes](https://github.com/cachix/devenv/releases)
- [Commits](5297dd928c...a7ee6565af)

---
updated-dependencies:
- dependency-name: devenv
  dependency-version: a7ee6565af4b316a50a9804df83ce792c1413037
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

flake.lock

@@ -164,11 +164,11 @@
         "rust-overlay": "rust-overlay"
       },
       "locked": {
-        "lastModified": 1777911862,
-        "narHash": "sha256-Vi3Zpj4M9hRhsOhMvbZMaYr0LC0NvG2cekJMrpaChGo=",
+        "lastModified": 1778014464,
+        "narHash": "sha256-mCCuXjlMqpy+BE4gCc0lNB39/EVHC9Tt04QcmrIzf0Y=",
         "owner": "cachix",
         "repo": "devenv",
-        "rev": "5297dd928c090440d90b9277d5113847b1edef19",
+        "rev": "a7ee6565af4b316a50a9804df83ce792c1413037",
         "type": "github"
       },
       "original": {