build: group dependabot updates (#773)

.github/dependabot.yml

@@ -9,6 +9,10 @@ updates:
     commit-message:
       prefix: "feat"
       include: "scope"
+    groups:
+      gomod:
+        patterns:
+          - "*"
   - package-ecosystem: "gomod"
     directory: "/examples"
     schedule:
@@ -16,8 +20,12 @@ updates:
     labels:
       - "dependencies"
     commit-message:
-      prefix: "chore"
+      prefix: "docs"
       include: "scope"
+    groups:
+      gomod:
+        patterns:
+          - "*"
   - package-ecosystem: "gomod"
     directory: "/tutorials"
     schedule:
@@ -25,8 +33,12 @@ updates:
     labels:
       - "dependencies"
     commit-message:
-      prefix: "chore"
+      prefix: "docs"
       include: "scope"
+    groups:
+      gomod:
+        patterns:
+          - "*"
   - package-ecosystem: "github-actions"
     directory: "/"
     schedule:
@@ -36,3 +48,7 @@ updates:
     commit-message:
       prefix: "chore"
       include: "scope"
+    groups:
+      github-actions:
+        patterns:
+          - "*"