.github/dependabot: Handle Substrate crates manually (#1961)

* .github/dependabot: Handle Substrate crates manually

Handle updates for crates from github.com/paritytech/substrate manually.

* .github/dependabot: Additional prefixes

Co-authored-by: Andronik Ordian <write@reusable.software>

Co-authored-by: Andronik Ordian <write@reusable.software>

polkadot/.github/dependabot.yml

@@ -3,5 +3,13 @@ updates:
   - package-ecosystem: "cargo"
     directory: "/"
     labels: ["A2-insubstantial", "B0-silent", "C1-low"]
+    # Handle updates for crates from github.com/paritytech/substrate manually.
+    ignore:
+      - dependency-name: "substrate-*"
+      - dependency-name: "sc-*"
+      - dependency-name: "sp-*"
+      - dependency-name: "frame-*"
+      - dependency-name: "fork-tree"
+      - dependency-name: "pallet-*"
     schedule:
       interval: "daily"