deps: pin to atty 0.2.6

atty 0.2.7 (and 0.2.8) contain a regression in cygwin terminals that
prevents basic use of ripgrep, and is also the cause of the Windows CI
test failures. For now, we pin to 0.2.6, but a patch has been submitted
upstream: https://github.com/softprops/atty/pull/25

1 files changed, 1 insertions, 1 deletions

diff --git a/Cargo.toml b/Cargo.toml
index 750b597c..cc11bbe0 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -33,7 +33,7 @@ path = "tests/tests.rs"
 members = ["grep", "globset", "ignore", "termcolor", "wincolor"]
 
 [dependencies]
-atty = "0.2.2"
+atty = "=0.2.6"
 bytecount = "0.3.1"
 encoding_rs = "0.7"
 globset = { version = "0.3.0", path = "globset" }