build: add dependabot cooldown and remove Microsoft.SourceLink.GitHub (#93)

Author: runejo

.github/dependabot.yml

@@ -14,8 +14,12 @@ updates:
         applies-to: version-updates
         update-types:
           - "minor"
+    cooldown:
+      default-days: 9
 
   - package-ecosystem: "github-actions"
     directory: "/"
     schedule:
       interval: "weekly"
+    cooldown:
+      default-days: 9

PCAxis.Menu.OracleDatamodelMenu/PCAxis.Menu.OracleDatamodelMenu.csproj

@@ -17,10 +17,6 @@
 
   <ItemGroup>
     <PackageReference Include="log4net" Version="3.3.0" />
-    <PackageReference Include="Microsoft.SourceLink.GitHub" Version="8.0.0">
-      <PrivateAssets>all</PrivateAssets>
-      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
-    </PackageReference>
     <PackageReference Include="MinVer" Version="7.0.0">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>