Update OpenSSL versions in documentation

Signed-off-by: Erik Boasson <eb@ilities.com>

README.md

@@ -114,7 +114,7 @@ In order to build Cyclone DDS you need a Linux, Mac or Windows 10 machine (or, w
   * C compiler (most commonly GCC on Linux, Visual Studio on Windows, Xcode on macOS);
   * Optionally GIT version control system;
   * [CMake](https://cmake.org/download/), version 3.16 or later;
-  * Optionally [OpenSSL](https://www.openssl.org/), preferably version 1.1;
+  * Optionally [OpenSSL](https://www.openssl.org/), we recommend a fully patched and supported version but 1.1.1 will still work;
   * Optionally [Eclipse Iceoryx](https://iceoryx.io) version 2.0 for shared memory and zero-copy support;
   * Optionally [Bison](https://www.gnu.org/software/bison/) parser generator. A cached source is checked into the repository.
 

docs/dev/dds_security_effort.md

@@ -137,9 +137,7 @@ No major changes between the DDS Security plugins in OpenSplice and Cyclone
 are expected.
 
 The DDS Security plugins require OpenSSL. Cyclone DDS already uses OpenSSL.
-However, it expects (or at least it's preferred to have) version 1.1 or newer,
-while the OpenSplice Security plugins are build against 1.0.2. There are some
-API changes between the two versions. This will take some porting effort.
+We recommend a fully patched and supported version but 1.1.1 will still work.
 
 The build system should be ported from makefiles to cmake files.