Add xmudrii as K8s Infra Tech Lead

Signed-off-by: Marko Mudrinić <mudrinic.mare@gmail.com>

Author: xmudrii

OWNERS_ALIASES

@@ -62,6 +62,7 @@ aliases:
     - ameukam
     - dims
     - upodroid
+    - xmudrii
   sig-multicluster-leads:
     - jeremyot
     - skitt

sig-k8s-infra/README.md

@@ -34,6 +34,7 @@ subprojects, and resolve cross-subproject technical issues and decisions.
 * Benjamin Elder (**[@BenTheElder](https://github.com/BenTheElder)**), Google
 * Arnaud Meukam (**[@ameukam](https://github.com/ameukam)**), Independent
 * Mahamed Ali (**[@upodroid](https://github.com/upodroid)**), Cisco
+* Marko Mudrinić (**[@xmudrii](https://github.com/xmudrii)**), Kubermatic
 
 ## Emeritus Leads
 

sigs.yaml

@@ -1985,6 +1985,10 @@ sigs:
     - github: upodroid
       name: Mahamed Ali
       company: Cisco
+    - github: xmudrii
+      name: Marko Mudrinić
+      company: Kubermatic
+      email: mudrinic.mare@gmail.com
     emeritus_leads:
     - github: bartsmykla
       name: Bart Smykla