Switch from k9 to insta for snapshot testing

We'll need some advanced features from insta.

Cargo.lock

@@ -714,16 +714,6 @@ version = "1.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5b63caa9aa9397e2d9480a9b13673856c78d8ac123288526c37d7839f2a86990"
 
-[[package]]
-name = "colored"
-version = "2.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cbf2150cce219b664a8a70df7a1f933836724b503f8a413af9365b4dcc4d90b8"
-dependencies = [
- "lazy_static",
- "windows-sys 0.48.0",
-]
-
 [[package]]
 name = "combine"
 version = "4.6.7"
@@ -743,6 +733,18 @@ dependencies = [
  "crossbeam-utils",
 ]
 
+[[package]]
+name = "console"
+version = "0.15.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ea3c6ecd8059b57859df5c69830340ed3c41d30e3da0c1cbed90a96ac853041b"
+dependencies = [
+ "encode_unicode",
+ "libc",
+ "once_cell",
+ "windows-sys 0.59.0",
+]
+
 [[package]]
 name = "convert_case"
 version = "0.6.0"
@@ -1018,6 +1020,12 @@ version = "1.13.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "60b1af1c220855b6ceac025d3f6ecdd2b7c4894bfe9cd9bda4fbb4bc7c0d4cf0"
 
+[[package]]
+name = "encode_unicode"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "34aa73646ffb006b8f5147f3dc182bd4bcb190227ce861fc4a4844bf8e3cb2c0"
+
 [[package]]
 name = "enumflags2"
 version = "0.7.10"
@@ -1878,6 +1886,18 @@ version = "1.18.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bd4f5b4d1c00331c5245163aacfe5f20be75b564c7112d45893d4ae038119eb0"
 
+[[package]]
+name = "insta"
+version = "1.41.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7e9ffc4d4892617c50a928c52b2961cb5174b6fc6ebf252b2fac9d21955c48b8"
+dependencies = [
+ "console",
+ "lazy_static",
+ "linked-hash-map",
+ "similar",
+]
+
 [[package]]
 name = "instant"
 version = "0.1.13"
@@ -1982,23 +2002,6 @@ dependencies = [
  "wasm-bindgen",
 ]
 
-[[package]]
-name = "k9"
-version = "0.12.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "088bcebb5b68b1b14b64d7f05b0f802719250b97fdc0338ec42529ea777ed614"
-dependencies = [
- "anyhow",
- "colored",
- "diff",
- "lazy_static",
- "libc",
- "proc-macro2",
- "regex",
- "syn 2.0.86",
- "terminal_size 0.2.6",
-]
-
 [[package]]
 name = "keyframe"
 version = "1.1.1"
@@ -2203,6 +2206,12 @@ dependencies = [
  "pkg-config",
 ]
 
+[[package]]
+name = "linked-hash-map"
+version = "0.5.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0717cef1bc8b636c6e1c1bbdefc09e6322da8a9321966e8928ef80d20f7f770f"
+
 [[package]]
 name = "linux-raw-sys"
 version = "0.3.8"
@@ -2325,7 +2334,7 @@ dependencies = [
  "supports-color",
  "supports-hyperlinks",
  "supports-unicode",
- "terminal_size 0.1.17",
+ "terminal_size",
  "textwrap",
  "thiserror",
  "unicode-width",
@@ -2409,7 +2418,7 @@ dependencies = [
  "git-version",
  "glam",
  "input",
- "k9",
+ "insta",
  "keyframe",
  "libc",
  "libdisplay-info",
@@ -2448,7 +2457,7 @@ version = "0.1.10"
 dependencies = [
  "bitflags 2.6.0",
  "csscolorparser",
- "k9",
+ "insta",
  "knuffel",
  "miette",
  "niri-ipc",
@@ -3628,6 +3637,12 @@ version = "0.3.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d66dc143e6b11c1eddc06d5c423cfc97062865baf299914ab64caa38182078fe"
 
+[[package]]
+name = "similar"
+version = "2.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1de1d4f81173b03af4c0cbed3c898f6bff5b870e4a7f5d6f4057d62a7a4b686e"
+
 [[package]]
 name = "siphasher"
 version = "0.3.11"
@@ -3899,16 +3914,6 @@ dependencies = [
  "winapi",
 ]
 
-[[package]]
-name = "terminal_size"
-version = "0.2.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8e6bf6f19e9f8ed8d4048dc22981458ebcf406d67e94cd422e5ecd73d63b3237"
-dependencies = [
- "rustix 0.37.27",
- "windows-sys 0.48.0",
-]
-
 [[package]]
 name = "textwrap"
 version = "0.15.2"