Add mareklibra to codewoners (#2645)

Author: asmasarw

.github/CODEOWNERS

@@ -36,4 +36,4 @@
 /workspaces/translations                            @redhat-developer/rhdh-ui @ciiay @debsmita1 @karthikjeeyar
 /workspaces/konflux                                 @rrosatti @sahil143 @testcara @rakshett
 /workspaces/x2a                                     @mareklibra @elai-shalev @eloycoto
-/workspaces/dcm                                     @asmasarw @jkilzi 
+/workspaces/dcm                                     @asmasarw @jkilzi @mareklibra