bpo-43631: Update to OpenSSL 1.1.1k (GH-25024)



- [x] Build OpenSSL 1.1.1k for macOS
- [x] Build OpenSSL 1.1.1k for Windows

I have also updated multissl tester and various CI configurations to use latest OpenSSL. The versions were all over the place.

Signed-off-by: Christian Heimes <christian@python.org>

Automerge-Triggered-By: GH:tiran
diff --git a/Mac/BuildScript/build-installer.py b/Mac/BuildScript/build-installer.py
index 864661e..25a6a24 100755
--- a/Mac/BuildScript/build-installer.py
+++ b/Mac/BuildScript/build-installer.py
@@ -242,9 +242,9 @@ def library_recipes():
 
     result.extend([
           dict(
-              name="OpenSSL 1.1.1j",
-              url="https://www.openssl.org/source/openssl-1.1.1j.tar.gz",
-              checksum='cccaa064ed860a2b4d1303811bf5c682',
+              name="OpenSSL 1.1.1k",
+              url="https://www.openssl.org/source/openssl-1.1.1k.tar.gz",
+              checksum='c4e7d95f782b08116afa27b30393dd27',
               buildrecipe=build_universal_openssl,
               configure=None,
               install=None,