Merge pull request #21761 from Teufelchen1/chore/codeowner_peter

codeowner: Remove PeterKietzmann and add Teufelchen

Author: crasbe

CODEOWNERS

@@ -95,7 +95,7 @@ Cargo.*                                     @chrysn
 /drivers/periph_common/                     @MrKevinWeiss
 /drivers/include/periph/ptp.h               @maribu
 
-/pkg/cryptoauthlib/                         @Einhornhool @PeterKietzmann
+/pkg/cryptoauthlib/                         @Einhornhool
 /pkg/libschc/                               @bartmoons @miri64
 /pkg/lua/                                   @jcarrano
 /pkg/lwip/                                  @miri64
@@ -124,7 +124,7 @@ Cargo.*                                     @chrysn
 /sys/net/gnrc/link_layer/lorawan/           @jia200x
 /sys/net/gnrc/netif/                        @miri64 @jia200x
 /sys/net/gnrc/routing/rpl/                  @emmanuelsearch
-/sys/net/                                   @miri64 @PeterKietzmann
+/sys/net/                                   @miri64
 /sys/pm_layered/                            @kaspar030
 /sys/random/fortuna/                        @basilfx
 /sys/riotboot/                              @kaspar030
@@ -145,7 +145,7 @@ Cargo.*                                     @chrysn
 /tests/pkg/lwip*                            @miri64
 /tests/pkg/libschc/                         @miri64
 /tests/net/slip/                            @miri64
-/tests/unittests                            @miri64
+/tests/unittests                            @miri64 @teufelchen1
 /tests/*/tests/*.py                         @miri64
 /tests/cpu/efm32_features/                  @basilfx