Bump numba from 0.51.1 to 0.51.2

requirements.txt

@@ -10,7 +10,7 @@ llvmlite==0.34.0
 mlxtend==0.17.3
 matplotlib==3.3.1
 more-itertools==8.5.0
-numba==0.51.1
+numba==0.51.2
 numpy==1.19.1
 outlier==0.2
 utils==1.0.1

sphinx-doc/requirements_sphinx.txt

@@ -25,7 +25,7 @@ MarkupSafe==1.1.1
 matplotlib==3.3.1
 mlxtend==0.17.2
 more-itertools==8.5.0
-numba==0.51.1
+numba==0.51.2
 numpy==1.19.1
 outlier==0.2
 outlier-utils==0.0.3