(Revised) - [HacktoberFest2023]: Added cpp.chat and No Diagnostic Required podcast under C++ podcasts section (#10512)

* [HacktoberFest2023]: Added cpp.chat and No Diagnostic Required podcasts under C++ podcasts section

* Addressed review comments for No Diagnostic Required podcast entry

Co-authored-by: Eric Hellman <eric@hellman.net>

* [HacktoberFest2023]: Fixed lint issues in podcast entries

* [HacktoberFest2023]: Fixed lint issue

---------

Co-authored-by: Eric Hellman <eric@hellman.net>

casts/free-podcasts-screencasts-en.md

@@ -58,7 +58,9 @@
 * [C++ Standard Library](https://www.youtube.com/playlist?list=PL5jc9xFGsL8G3y3ywuFSvOuNm3GjBwdkb) - Bo Qian (screencast)
 * [C++ STL by example](https://www.youtube.com/playlist?list=PLZ9NgFYEMxp5oH3mrr4IlFBn03rjS-gN1) - Douglas Schmidt (screencast)
 * [C++ STL: The ONLY Video You Need | Compulsory for DSA/CP](https://www.youtube.com/watch?v=PZogbfU4X5E) - Utkarsh Gupta (screencast)
+* [cpp.chat](https://cpp.chat) - Jon Kalb, Phil Nash (podcast)
 * [CppCast](http://cppcast.com) - Conor Hoekstra, Jason Turner, JeanHeyd Meneide, Matt Godbolt, Rob Irving (podcast)
+* [No Diagnostic Required](https://nodiagnosticrequired.tv) - Anastasia Kazakova, Phil Nash (podcast)
 
 
 ### Clojure