Bump petgraph from 0.7.1 to 0.8.1 in the all group

Bumps the all group with 1 update: [petgraph](https://github.com/petgraph/petgraph).


Updates `petgraph` from 0.7.1 to 0.8.1
- [Release notes](https://github.com/petgraph/petgraph/releases)
- [Changelog](https://github.com/petgraph/petgraph/blob/master/CHANGELOG.md)
- [Commits](https://github.com/petgraph/petgraph/compare/petgraph@v0.7.1...petgraph@v0.8.1)

---
updated-dependencies:
- dependency-name: petgraph
  dependency-version: 0.8.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: all
...

Signed-off-by: dependabot[bot] <support@github.com>

Cargo.lock

@@ -4433,11 +4433,12 @@ checksum = "e3148f5046208a5d56bcfc03053e3ca6334e51da8dfb19b6cdc8b306fae3283e"
 
 [[package]]
 name = "petgraph"
-version = "0.7.1"
+version = "0.8.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3672b37090dbd86368a4145bc067582552b29c27377cad4e0a306c97f9bd7772"
+checksum = "7a98c6720655620a521dcc722d0ad66cd8afd5d86e34a89ef691c50b7b24de06"
 dependencies = [
  "fixedbitset",
+ "hashbrown 0.15.3",
  "indexmap 2.9.0",
  "serde",
 ]

server/testkit/Cargo.toml

@@ -61,7 +61,7 @@ ldap3_client = { workspace = true }
 oauth2_ext = { workspace = true, default-features = false, features = [
     "reqwest",
 ] }
-petgraph = { version = "0.7.1", features = ["serde"] }
+petgraph = { version = "0.8.1", features = ["serde"] }
 serde_json = { workspace = true }
 time = { workspace = true }
 tokio-openssl = { workspace = true }