Bump scipy from 1.5.4 to 1.6.2

Bumps [scipy](https://github.com/scipy/scipy) from 1.5.4 to 1.6.2.
- [Release notes](https://github.com/scipy/scipy/releases)
- [Commits](scipy/scipy@v1.5.4...v1.6.2)

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

requirements.txt

@@ -22,7 +22,7 @@ tensorflow==2.4.0
 sympy==1.7.1
 sqlparse==0.4.0
 spglib==1.16.0
-scipy==1.5.4
+scipy==1.6.2
 pymatgen==2020.12.31
 
 # Temporary qmpy3 dependency