bug: Fix missing sorting arrow when for non-% mem (#389)

Fixes a bug where you could make the sorting arrow disappear in the mem column if you did:

1. Go to proc widget
2. Switch to memory values from %
3. Press `m`

1 files changed, 2 insertions, 2 deletions

diff --git a/Cargo.toml b/Cargo.toml
index db319ea2..82a7c29f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -72,8 +72,8 @@ heim = { version = "0.1.0-rc.1", features = ["disk", "memory"] }
 winapi = "0.3.9"
 
 [dev-dependencies]
-assert_cmd = "~1.0"
-predicates = "1"
+assert_cmd = "1.0.2"
+predicates = "1.0.6"
 
 [build-dependencies]
 clap = "2.33"