chore(deps): bump devenv from `5f1cf17` to `29fcc8a` (#22782)

Bumps [devenv](https://github.com/cachix/devenv) from `5f1cf17` to `29fcc8a`.
- [Release notes](https://github.com/cachix/devenv/releases)
- [Commits](5f1cf17be0...29fcc8a9a7)

---
updated-dependencies:
- dependency-name: devenv
  dependency-version: 29fcc8a9a778c2e3f822ef961cc9667122e79dd5
  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

@@ -64,11 +64,11 @@
         "rust-overlay": "rust-overlay"
       },
       "locked": {
-        "lastModified": 1784325378,
-        "narHash": "sha256-Gof6j4d43yX2qSLLp78JILke346IggDFIxTgl3ecVQE=",
+        "lastModified": 1784586378,
+        "narHash": "sha256-F+K6FU/IBSsaxDu23imNkcpJzMbzYXNjn7bBP/22N3I=",
         "owner": "cachix",
         "repo": "devenv",
-        "rev": "5f1cf17be0fc48689bd0ecb810de6d2e06d259a1",
+        "rev": "29fcc8a9a778c2e3f822ef961cc9667122e79dd5",
         "type": "github"
       },
       "original": {