Update build.yml to include YAML file paths

Added support for YAML files in build workflow triggers.

Author: rhuijben

.github/workflows/build.yml

@@ -6,11 +6,15 @@ on:
     paths:
       - '**.cs'
       - '**.csproj'
+      - '**.yml'
 
   pull_request:
     paths:
       - '**.cs'
       - '**.csproj'
+      - '**.yml'
+
+  workflow_dispatch:
 
 env:
   REPODB_MYSQL_CONSTR_SYS: "Server=127.0.0.1;Port=43306;Database=sys;User ID=root;Password=ddd53e85-b15e-4da8-91e5-a7d3b00a0ab2;"