chore(cargo): bump iroh-gossip from 0.30.1 to 0.31.0

Bumps [iroh-gossip](https://github.com/n0-computer/iroh-gossip) from 0.30.1 to 0.31.0.
- [Release notes](https://github.com/n0-computer/iroh-gossip/releases)
- [Changelog](https://github.com/n0-computer/iroh-gossip/blob/main/CHANGELOG.md)
- [Commits](n0-computer/iroh-gossip@v0.30.1...v0.31.0)

---
updated-dependencies:
- dependency-name: iroh-gossip
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

Cargo.lock

@@ -64,7 +64,7 @@ humansize = "2"
 hyper = "1"
 hyper-util = "0.1.10"
 image = { version = "0.25.5", default-features=false, features = ["gif", "jpeg", "ico", "png", "pnm", "webp", "bmp"] }
-iroh-gossip = { version = "0.30", default-features = false, features = ["net"] }
+iroh-gossip = { version = "0.31", default-features = false, features = ["net"] }
 iroh = { version = "0.30", default-features = false }
 kamadak-exif = "0.6.1"
 lettre_email = { git = "https://github.com/deltachat/lettre", branch = "master" }