Group and update all dependencies using dependabot

Author: rnijveld

.github/dependabot.yml

@@ -5,19 +5,18 @@ updates:
   schedule:
     interval: weekly
   open-pull-requests-limit: 10
+  groups:
+    github-actions:
+      patterns: ["*"]
 
 - package-ecosystem: cargo
-  directory: "/"
+  directories: ["/", "/fuzz/", "/statime-stm32/"]
+  allow:
+    - dependency-type: all
   schedule:
     interval: daily
   versioning-strategy: lockfile-only
   open-pull-requests-limit: 10
-
-- package-ecosystem: cargo
-  directory: "/statime-stm32/"
-  schedule:
-    interval: "monthly"
   groups:
-    stm32-example:
-      patterns:
-        - "*"
+    cargo:
+      patterns: ["*"]