Bump anstream from 0.6.4 to 0.6.15

Bumps [anstream](https://github.com/rust-cli/anstyle) from 0.6.4 to 0.6.15.
- [Commits](https://github.com/rust-cli/anstyle/compare/anstream-v0.6.4...anstream-v0.6.15)

---
updated-dependencies:
- dependency-name: anstream
  dependency-type: indirect
...

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

Cargo.lock

@@ -43,15 +43,16 @@ dependencies = [
 
 [[package]]
 name = "anstream"
-version = "0.6.4"
+version = "0.6.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2ab91ebe16eb252986481c5b62f6098f3b698a45e34b5b98200cf20dd2484a44"
+checksum = "64e15c1ab1f89faffbf04a634d5e1962e9074f2741eef6d97f3c4e322426d526"
 dependencies = [
  "anstyle",
  "anstyle-parse",
  "anstyle-query",
  "anstyle-wincon",
  "colorchoice",
+ "is_terminal_polyfill",
  "utf8parse",
 ]
 
@@ -416,6 +417,12 @@ dependencies = [
  "windows-sys 0.48.0",
 ]
 
+[[package]]
+name = "is_terminal_polyfill"
+version = "1.70.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7943c866cc5cd64cbc25b2e01621d07fa8eb2a1a23160ee81ce38704e97b8ecf"
+
 [[package]]
 name = "js-sys"
 version = "0.3.66"