python3-urllib3: Upgrade 1.26.2 -> 1.26.3

Upgrade to release 1.26.3:

- Fixed bytes and string comparison issue with headers
- Changed ProxySchemeUnknown error message to be more actionable
  if the user supplies a proxy URL without a scheme

Signed-off-by: Leon Anavi <leon.anavi@konsulko.com>
Acked-by: Trevor Gamblin <trevor.gamblin@windriver.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-python/recipes-devtools/python/python3-urllib3_1.26.3.bb

@@ -0,0 +1,22 @@
+SUMMARY = "Python HTTP library with thread-safe connection pooling, file post support, sanity friendly, and more"
+HOMEPAGE = "https://github.com/shazow/urllib3"
+LICENSE = "MIT"
+LIC_FILES_CHKSUM = "file://LICENSE.txt;md5=c2823cb995439c984fd62a973d79815c"
+
+SRC_URI[sha256sum] = "de3eedaad74a2683334e282005cd8d7f22f4d55fa690a2a1020a416cb0a47e73"
+
+inherit pypi setuptools3
+
+RDEPENDS_${PN} += "\
+    ${PYTHON_PN}-certifi \
+    ${PYTHON_PN}-cryptography \
+    ${PYTHON_PN}-email \
+    ${PYTHON_PN}-idna \
+    ${PYTHON_PN}-netclient \
+    ${PYTHON_PN}-pyopenssl \
+    ${PYTHON_PN}-threading \
+"
+
+CVE_PRODUCT = "urllib3"
+
+BBCLASSEXTEND = "native nativesdk"