package/python3: drop libressl support

Libressl is no longer supported as of python 3.10.

See: https://peps.python.org/pep-0644/#libressl

Fixes:
 - http://autobuild.buildroot.net/results/a16/a160cfdc9dfc036c4dc41af1c796f8838d91c573

Signed-off-by: James Hilliard <james.hilliard1@gmail.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
(cherry picked from commit bbf93570426c64499ec9221c5dca1d1cc29db4fc)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/python3/Config.in

@@ -89,7 +89,8 @@ config BR2_PACKAGE_PYTHON3_READLINE
 config BR2_PACKAGE_PYTHON3_SSL
 	bool "ssl"
 	select BR2_PACKAGE_OPENSSL
-	select BR2_PACKAGE_LIBOPENSSL_ENABLE_BLAKE2 if BR2_PACKAGE_LIBOPENSSL
+	select BR2_PACKAGE_OPENSSL_FORCE_LIBOPENSSL
+	select BR2_PACKAGE_LIBOPENSSL_ENABLE_BLAKE2
 	help
 	  _ssl module for Python3 (required for https in urllib etc).