chore: reenable all cargo deny checks (#632)

.github/workflows/CI.yml

@@ -97,4 +97,4 @@ jobs:
     - uses: actions/checkout@v1
     - uses: EmbarkStudios/cargo-deny-action@v1
       with:
-        command: check advisories licenses sources
+        command: check

deny.toml

@@ -15,13 +15,7 @@ confidence-threshold = 0.8
 [bans]
 multiple-versions = "deny"
 highlight = "all"
-skip-tree = [{ name = "tower", version = ">=0.3, <=0.4" }]
-skip = [
-    # `quickcheck` and `tracing-subscriber` depend on incompatible versions of
-    # `wasi` via their dependencies on `rand` and `chrono`, respectively; we
-    # can't really fix this.
-    { name = "wasi" },
-]
+skip = []
 
 [sources]
 unknown-registry = "warn"