Update pretty_assertions to 1.3

This replaces ansi_term with yansi which in turn removes a winapi
dependency edge

src/bootstrap/Cargo.lock

@@ -11,15 +11,6 @@ dependencies = [
  "memchr",
 ]
 
-[[package]]
-name = "ansi_term"
-version = "0.12.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d52a9bb7ec0cf484c551830a7ce27bd20d67eac647e1befb56b0be4ee39a55d2"
-dependencies = [
- "winapi",
-]
-
 [[package]]
 name = "autocfg"
 version = "1.1.0"
@@ -447,14 +438,14 @@ checksum = "1df8c4ec4b0627e53bdf214615ad287367e482558cf84b109250b37464dc03ae"
 
 [[package]]
 name = "pretty_assertions"
-version = "0.7.2"
+version = "1.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1cab0e7c02cf376875e9335e0ba1da535775beb5450d21e1dffca068818ed98b"
+checksum = "a25e9bcb20aa780fd0bb16b72403a9064d6b3f22f026946029acb941a50af755"
 dependencies = [
- "ansi_term",
  "ctor",
  "diff",
  "output_vt100",
+ "yansi",
 ]
 
 [[package]]
@@ -803,3 +794,9 @@ checksum = "c179869f34fc7c01830d3ce7ea2086bc3a07e0d35289b667d0a8bf910258926c"
 dependencies = [
  "lzma-sys",
 ]
+
+[[package]]
+name = "yansi"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "09041cd90cf85f7f8b2df60c646f853b7f535ce68f85244eb6731cf89fa498ec"

src/bootstrap/Cargo.toml

@@ -72,7 +72,7 @@ features = [
 ]
 
 [dev-dependencies]
-pretty_assertions = "0.7"
+pretty_assertions = "1.2"
 
 [features]
 build-metrics = ["sysinfo"]