ci: group dependabot updates to one PR (#1214)

Signed-off-by: Jan Wozniak <wozniak.jan@gmail.com>

.github/dependabot.yml

@@ -8,6 +8,10 @@ updates:
   labels:
   - enhancement
   - dependency-management
+  groups:
+    all-updates:
+      patterns:
+        - "*"
 - package-ecosystem: gomod
   directory: "/"
   schedule:
@@ -16,6 +20,10 @@ updates:
   labels:
   - enhancement
   - dependency-management
+  groups:
+    all-updates:
+      patterns:
+        - "*"
 - package-ecosystem: docker
   directory: "/"
   schedule:
@@ -24,3 +32,7 @@ updates:
   labels:
   - enhancement
   - dependency-management
+  groups:
+    all-updates:
+      patterns:
+        - "*"