cargo: bump indexmap from 1.6.2 to 1.7.0

Bumps [indexmap](https://github.com/bluss/indexmap) from 1.6.2 to 1.7.0.
- [Release notes](https://github.com/bluss/indexmap/releases)
- [Commits](https://github.com/bluss/indexmap/compare/1.6.2...1.7.0)

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

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

Cargo.lock

@@ -1771,12 +1771,6 @@ version = "1.7.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "62aca2aba2d62b4a7f5b33f3712cb1b0692779a56fb510499d5c0aa594daeaf3"
 
-[[package]]
-name = "hashbrown"
-version = "0.9.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d7afe4a420e3fe79967a00898cc1f4db7c8a49a9333a29f8a4bd76a253d5cd04"
-
 [[package]]
 name = "hashbrown"
 version = "0.11.2"
@@ -1792,7 +1786,7 @@ version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7249a3129cbc1ffccd74857f81464a323a152173cdb134e0fd81bc803b29facf"
 dependencies = [
- "hashbrown 0.11.2",
+ "hashbrown",
 ]
 
 [[package]]
@@ -1975,12 +1969,12 @@ dependencies = [
 
 [[package]]
 name = "indexmap"
-version = "1.6.2"
+version = "1.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "824845a0bf897a9042383849b02c1bc219c2383772efcd5c6f9766fa4b81aef3"
+checksum = "bc633605454125dec4b66843673f01c7df2b89479b32e0ed634e43a91cff62a5"
 dependencies = [
  "autocfg 1.0.1",
- "hashbrown 0.9.1",
+ "hashbrown",
 ]
 
 [[package]]

Cargo.toml

@@ -35,7 +35,7 @@ escaper = "0.1.1"
 futures = "0.3.16"
 hex = "0.4.0"
 image = { version = "0.23.5", default-features=false, features = ["gif", "jpeg", "ico", "png", "pnm", "webp", "bmp"] }
-indexmap = "1.3.0"
+indexmap = "1.7.0"
 itertools = "0.10.1"
 kamadak-exif = "0.5"
 lettre_email = { git = "https://github.com/deltachat/lettre", branch = "master" }