requirements: pin pylint and black

acomodi · vaughnbetz · commit 164454577c38 · 2021-05-06T13:21:50.000-04:00
Signed-off-by: Alessandro Comodi &lt;acomodi@antmicro.com&gt;
diff --git a/requirements.txt b/requirements.txt
@@ -1,5 +1,6 @@
-black
 prettytable
-pylint
 lxml
 psutil
+# Python linter and formatter
+black==20.8b1
+pylint==2.7.4
