Group dependabot python dependencies and github actions updates (#426)

The version control workflow we use on Hyperion consists of squashing
and merging PR on main so we should do the same for dependabot
dependencies updates.

Author: julien4215

.github/dependabot.yml

@@ -8,9 +8,29 @@ updates:
     directory: "/"
     schedule:
       interval: "monthly"
+    groups:
+      actions:
+        applies-to: version-updates
+        patterns:
+          - "*"
+
 
   # Maintain Python dependencies
   - package-ecosystem: "pip"
     directory: "/"
     schedule:
       interval: "monthly"
+    groups:
+      types-dependencies:
+        applies-to: version-updates
+        patterns:
+          - "types-*"
+          - "mypy"
+      tests-dependencies:
+        applies-to: version-updates
+        patterns:
+          - "pytest*"
+      patch-dependencies:
+        applies-to: version-updates
+        update-types:
+          - "patch"