chore: add myself to CODEOWNERS for auto build actions

Signed-off-by: John Molakvoæ <skjnldsv@users.noreply.github.com>

Author: skjnldsv

.github/CODEOWNERS

@@ -8,3 +8,7 @@
 /developer_manual/digging_deeper/groupware/calendar.rst     @SebastianKrupinski @st3iny @tcitworld
 /developer_manual/digging_deeper/talk.rst                   @nickvergessen
 /user_manual/talk/                                          @Antreesy @DorraJaouad @nickvergessen
+
+# Auto build actions
+.github/workflows/sphinxbuild.yml                          @skjnldsv
+.github/workflows/generate-top-index.yml                   @skjnldsv