Convert to new override syntax

This is the result of automated script (0.9.1) conversion:

oe-core/scripts/contrib/convert-overrides.py .

converting the metadata to use ":" as the override character instead of "_".

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>

meta-python/recipes-devtools/python/python3-aiohttp_3.7.4.post0.bb

@@ -8,7 +8,7 @@ SRC_URI[sha256sum] = "493d3299ebe5f5a7c66b9819eacdcfbbaaf1a8e84911ddffcdc4888849
 
 PYPI_PACKAGE = "aiohttp"
 inherit setuptools3 pypi
-RDEPENDS_${PN} = "\
+RDEPENDS:${PN} = "\
     ${PYTHON_PN}-async-timeout \
     ${PYTHON_PN}-attrs \
     ${PYTHON_PN}-chardet \