python3-elementpath: upgrade 4.1.5 -> 4.2.0

Changelog:
============
-Drop support for Python 3.7
-Add uri and fragment options to dynamic context
-Make context root node not mandatory (issue openembedded#63)
-Add function objects constructor (issue openembedded#70)

Signed-off-by: Wang Mingyu <[email protected]>
Signed-off-by: Khem Raj <[email protected]>

Author: wangmingyu84

meta-python/recipes-devtools/python/python3-elementpath_4.1.5.bb renamed to meta-python/recipes-devtools/python/python3-elementpath_4.2.0.bb

@@ -3,7 +3,7 @@ HOMEPAGE = "https://github.com/sissaschool/elementpath"
 LICENSE = "MIT"
 LIC_FILES_CHKSUM = "file://LICENSE;md5=5dbb7fb7d72da3921202dd7b995d3ecf"
 
-SRC_URI[sha256sum] = "c2d6dc524b29ef751ecfc416b0627668119d8812441c555d7471da41d4bacb8d"
+SRC_URI[sha256sum] = "c53f6531e602dd596a729f75833146ada40c2445a10dae36d9e461068b63af29"
 
 PYPI_PACKAGE = "elementpath"
 inherit pypi setuptools3