v1.7.2-rc3: bump version (unified release)

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "freemkv-keysources"
-version = "1.7.1"
+version = "1.7.2-rc3"
 edition = "2024"
 rust-version = "1.88"
 license = "MIT"
@@ -17,7 +17,7 @@ publish = false
 # The crate provides the `KeySource` trait + `Key`/`DiscInputs` types these impls fill.
 # libfreemkv is git-only now; the committed [patch.crates-io] below redirects this
 # bare version req to the libfreemkv git tag (local dev overrides it to a path).
-libfreemkv = "1.6"
+libfreemkv = "1.7.2-rc3"
 # OnlineSource: POST disc inputs + samples to a key service over HTTP.
 ureq = { version = "3", features = ["json"] }
 serde_json = "1"
@@ -40,7 +40,7 @@ codegen-units = 1
 # overrides it with a path patch via the gitignored .cargo/config.toml (a
 # config-level [patch.crates-io] wins over this manifest one for the same crate).
 [patch.crates-io]
-libfreemkv = { git = "https://github.com/freemkv/libfreemkv", tag = "v1.6.14" }
+libfreemkv = { git = "https://github.com/freemkv/libfreemkv", tag = "v1.7.2-rc3" }
 
 [lints.clippy]
 uninlined_format_args = "allow"