Bump mozci from 1.6.0 to 1.6.1 (#1649)

Bumps [mozci]() from 1.6.0 to 1.6.1.

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

requirements.txt

@@ -7,7 +7,7 @@ lmdb==0.98
 matplotlib==3.2.1
 mercurial==5.3.2
 microannotate==0.0.20
-mozci==1.6.0
+mozci==1.6.1
 numpy==1.18.5
 orjson==3.1.0
 ortools==7.6.7691