Remove strict parameter from zip where lengths can differ

The comment explicitly states that 'unique and colors length can be
differed depending on slice value', so strict=True should not be used
in this zip() call as it would raise ValueError when lengths don't match.

Fixes test failures in plotting tests.

Author: AKHIL-149

pandas/tests/plotting/common.py

@@ -127,7 +127,7 @@ def _get_colors_mapped(series, colors):
     unique = series.unique()
     # unique and colors length can be differed
     # depending on slice value
-    mapped = dict(zip(unique, colors, strict=True))
+    mapped = dict(zip(unique, colors))
     return [mapped[v] for v in series.values]