Dependabot configuration for Go modules and npm dependencies and CODEOWNERS (#86)

Signed-off-by: Brooke Hamilton <45323234+brooke-hamilton@users.noreply.github.com>

Author: brooke-hamilton

.github/CODEOWNERS

@@ -8,3 +8,22 @@
 # Default rule: anything that doesn't match a more specific rule goes here
 # These owners are the maintainers and approvers of this repo
 *       @radius-project/maintainers-docs @radius-project/approvers-docs
+
+# Ownership for dependency-related files. Allow the on-call team to approve dependency version updates (e.g., from Dependabot PRs)
+
+# Go module files
+**/go.mod   @radius-project/on-call @radius-project/maintainers-docs @radius-project/approvers-docs
+**/go.sum   @radius-project/on-call @radius-project/maintainers-docs @radius-project/approvers-docs
+
+# Node.js npm configuration
+**/package.json       @radius-project/on-call @radius-project/maintainers-docs @radius-project/approvers-docs
+**/package-lock.json  @radius-project/on-call @radius-project/maintainers-docs @radius-project/approvers-docs
+/.node-version        @radius-project/on-call @radius-project/maintainers-docs @radius-project/approvers-docs
+
+# GitHub Actions workflows
+.github/workflows/*.yaml  @radius-project/on-call @radius-project/maintainers-docs @radius-project/approvers-docs
+.github/workflows/*.yml   @radius-project/on-call @radius-project/maintainers-docs @radius-project/approvers-docs
+
+# GitHub config files (dependabot, etc.)
+.github/*.yaml  @radius-project/on-call @radius-project/maintainers-docs @radius-project/approvers-docs
+.github/*.yml   @radius-project/on-call @radius-project/maintainers-docs @radius-project/approvers-docs

.github/dependabot.yml

@@ -15,3 +15,25 @@ updates:
     groups:
       all:
         patterns: ["*"]
+
+  - package-ecosystem: gomod
+    directory: /radblog
+    schedule:
+      interval: weekly
+    commit-message:
+      prefix: deps
+      include: scope
+    groups:
+      all:
+        patterns: ["*"]
+
+  - package-ecosystem: npm
+    directory: /radblog
+    schedule:
+      interval: weekly
+    commit-message:
+      prefix: deps
+      include: scope
+    groups:
+      all:
+        patterns: ["*"]