Bump cssparser from 0.29.2 to 0.29.6

Bumps [cssparser](https://github.com/servo/rust-cssparser) from 0.29.2 to 0.29.6.
- [Release notes](https://github.com/servo/rust-cssparser/releases)
- [Commits](https://github.com/servo/rust-cssparser/commits)

---
updated-dependencies:
- dependency-name: cssparser
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Cargo.lock

@@ -1209,15 +1209,15 @@ dependencies = [
 
 [[package]]
 name = "cssparser"
-version = "0.29.2"
+version = "0.29.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "031d29b6d1ea84f63436e45fb6f3c1a3d62dc1650018c53fa7165e108d35d88f"
+checksum = "f93d03419cb5950ccfd3daf3ff1c7a36ace64609a1a8746d493df1ca0afde0fa"
 dependencies = [
  "cssparser-macros",
  "dtoa-short",
- "itoa 0.4.8",
+ "itoa 1.0.1",
  "matches",
- "phf 0.8.0",
+ "phf 0.10.1",
  "proc-macro2",
  "quote",
  "serde",
@@ -4720,9 +4720,7 @@ version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3dfb61232e34fcb633f43d12c58f83c1df82962dcdfa565a4e866ffc17dafe12"
 dependencies = [
- "phf_macros",
  "phf_shared 0.8.0",
- "proc-macro-hack",
 ]
 
 [[package]]
@@ -4731,7 +4729,9 @@ version = "0.10.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fabbf1ead8a5bcbc20f5f8b939ee3f5b0f6f281b6ad3468b84656b658b455259"
 dependencies = [
+ "phf_macros",
  "phf_shared 0.10.0",
+ "proc-macro-hack",
 ]
 
 [[package]]
@@ -4776,12 +4776,12 @@ dependencies = [
 
 [[package]]
 name = "phf_macros"
-version = "0.8.0"
+version = "0.10.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7f6fde18ff429ffc8fe78e2bf7f8b7a5a5a6e2a8b58bc5a9ac69198bbda9189c"
+checksum = "58fdf3184dd560f160dd73922bea2d5cd6e8f064bf4b13110abd81b03697b4e0"
 dependencies = [
- "phf_generator 0.8.0",
- "phf_shared 0.8.0",
+ "phf_generator 0.10.0",
+ "phf_shared 0.10.0",
  "proc-macro-hack",
  "proc-macro2",
  "quote",