chore(deps): Bump rust-ini to 0.20 (#374)

* `rust-ini` 0.20 bumped `ordered-multimap` to 0.7
* `ordered-multimap 0.71` fixed a feature renaming
sgodwincs/ordered-multimap-rs@131ab56
* The feature renaming is required for downstream application to bump
nightly rust-toolchain. see
rust-lang/rust#114656

Please release a minor or patch version (both are OK because the update
only breaks nightly toolchain and affect nothing on stable toolchain)
after the PR got merged.

Signed-off-by: TennyZhuang <zty0826@gmail.com>

Author: TennyZhuang

Cargo.toml

@@ -72,7 +72,7 @@ quick-xml = { version = "0.31", features = ["serialize"], optional = true }
 rand = "0.8.5"
 reqwest = { version = "0.11", default-features = false, optional = true }
 rsa = { version = "0.9.2" }
-rust-ini = { version = "0.19", optional = true }
+rust-ini = { version = "0.20", optional = true }
 serde = { version = "1", features = ["derive"], optional = true }
 serde_json = { version = "1", optional = true }
 sha1 = "0.10"