update dependabot config

Author: adamralph

.cspell.json

@@ -18,6 +18,7 @@
     "codeql",
     "cref",
     "Cresnar",
+    "devcontainers",
     "errorlevel",
     "inheritdoc",
     "langword",

.github/dependabot.yml

@@ -1,5 +1,21 @@
 version: 2
 updates:
+  - package-ecosystem: "devcontainers"
+    directory: "/"
+    schedule:
+      interval: "daily"
+  - package-ecosystem: "docker"
+    directory: "/"
+    schedule:
+      interval: "daily"
+  - package-ecosystem: "dotnet-sdk"
+    directory: "/"
+    schedule:
+      interval: "daily"
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "daily"
   - package-ecosystem: "nuget"
     directory: "/"
     schedule:
@@ -9,7 +25,3 @@ updates:
         patterns:
           - "xunit"
           - "xunit.*"
-  - package-ecosystem: "github-actions"
-    directory: "/"
-    schedule:
-      interval: "daily"