Update publishing key, branch names

Author: nblumhardt

appveyor.yml

@@ -14,7 +14,7 @@ deploy:
     secure: Fh92tRIFbe1FAiyD8lTThWgAorQ1vV+eFYMlUK0iLHBBenJcy/UYc1qj6kgHvUcO
   skip_symbols: true
   on:
-    branch: /^(master|dev)$/
+    branch: /^(main|dev)$/
 - provider: GitHub
   auth_token:
     secure: p4LpVhBKxGS5WqucHxFQ5c7C8cP74kbNB0Z8k9Oxx/PMaDQ1+ibmoexNqVU5ZlmX
@@ -23,4 +23,4 @@ deploy:
     /Serilog.*\.snupkg/
   tag: v$(appveyor_build_version)
   on:
-    branch: master
+    branch: main