cargo: Bump serde_yaml to 0.9

As the bump of `serde_yaml` to `0.9` breaks all enums and especially
all optional enums use `#[serde(with =
"serde_yaml::with::singleton_map_recursive")]` at some places to fix
it.

Cargo.lock

@@ -757,12 +757,6 @@ version = "0.2.146"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f92be4933c13fd498862a9e02a3055f8a8d9c039ce33db97306fd5a6caa7f29b"
 
-[[package]]
-name = "linked-hash-map"
-version = "0.5.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0717cef1bc8b636c6e1c1bbdefc09e6322da8a9321966e8928ef80d20f7f770f"
-
 [[package]]
 name = "linux-raw-sys"
 version = "0.3.8"
@@ -1331,14 +1325,15 @@ dependencies = [
 
 [[package]]
 name = "serde_yaml"
-version = "0.8.26"
+version = "0.9.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "578a7433b776b56a35785ed5ce9a7e777ac0598aac5a6dd1b4b18a307c7fc71b"
+checksum = "d9d684e3ec7de3bf5466b32bd75303ac16f0736426e5a4e0d6e489559ce1249c"
 dependencies = [
  "indexmap",
+ "itoa",
  "ryu",
  "serde",
- "yaml-rust",
+ "unsafe-libyaml",
 ]
 
 [[package]]
@@ -1740,6 +1735,12 @@ version = "0.2.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f962df74c8c05a667b5ee8bcf162993134c104e96440b663c8daa176dc772d8c"
 
+[[package]]
+name = "unsafe-libyaml"
+version = "0.2.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1865806a559042e51ab5414598446a5871b561d21b6764f2eabb0dd481d880a6"
+
 [[package]]
 name = "untrusted"
 version = "0.7.1"
@@ -1992,15 +1993,6 @@ dependencies = [
  "memchr",
 ]
 
-[[package]]
-name = "yaml-rust"
-version = "0.4.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "56c1936c4cc7a1c9ab21a1ebb602eb942ba868cbd44a99cb7cdc5892335e1c85"
-dependencies = [
- "linked-hash-map",
-]
-
 [[package]]
 name = "yansi"
 version = "0.5.1"

Cargo.toml

@@ -25,7 +25,7 @@ run_script = "0.9"
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
 serde_regex = "1.1"
-serde_yaml = "0.8"
+serde_yaml = "0.9"
 sha2 = "0.9"
 thiserror = "1.0"
 

src/filters.rs

@@ -26,7 +26,9 @@ impl AddrType {
 #[derive(Debug, Deserialize, Serialize)]
 #[serde(deny_unknown_fields, rename_all = "lowercase")]
 pub enum IpFilter {
+    #[serde(with = "serde_yaml::with::singleton_map_recursive")]
     Allow(Vec<AddrType>),
+    #[serde(with = "serde_yaml::with::singleton_map_recursive")]
     Deny(Vec<AddrType>),
 }
 

src/hooks.rs

@@ -55,6 +55,7 @@ pub struct Hook {
     signature: String,
     ip_filter: Option<IpFilter>,
     secrets: Vec<String>,
+    #[serde(with = "serde_yaml::with::singleton_map_recursive")]
     filter: FilterType,
 }