Bump fonttools from 4.0.2 to 4.2.4

Bumps [fonttools](https://github.com/fonttools/fonttools) from 4.0.2 to 4.2.4.
- [Release notes](https://github.com/fonttools/fonttools/releases)
- [Changelog](https://github.com/fonttools/fonttools/blob/master/NEWS.rst)
- [Commits](fonttools/fonttools@4.0.2...4.2.4)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Author: dependabot-preview[bot]

requirements.txt

@@ -1 +1 @@
-fontTools==4.0.2
+fontTools==4.2.4

setup.py

@@ -12,7 +12,7 @@
 AUTHOR = "Source Foundry Authors and Contributors"
 REQUIRES_PYTHON = ">=3.6.0"
 
-INSTALL_REQUIRES = ["fontTools==4.0.0",
+INSTALL_REQUIRES = ["fontTools==4.2.4",
                     ]
 # Optional packages
 EXTRAS_REQUIRES = {