Upgrade to GitHub-native Dependabot

.github/dependabot.yml

@@ -0,0 +1,40 @@
+version: 2
+updates:
+- package-ecosystem: gomod
+  directory: "/"
+  schedule:
+    interval: daily
+  open-pull-requests-limit: 10
+  ignore:
+  - dependency-name: github.com/CosmWasm/wasmvm
+    versions:
+    - 0.14.0-beta2
+    - 0.14.0-beta3
+    - 0.14.0-beta4
+    - 0.14.0-beta5
+    - 0.14.0-rc1
+  - dependency-name: github.com/tendermint/tendermint
+    versions:
+    - 0.34.10
+    - 0.34.4
+    - 0.34.7
+    - 0.34.8
+    - 0.34.9
+  - dependency-name: github.com/cosmos/cosmos-sdk
+    versions:
+    - 0.41.4
+    - 0.42.0
+    - 0.42.1
+    - 0.42.2
+    - 0.42.4
+  - dependency-name: google.golang.org/grpc
+    versions:
+    - 1.36.0
+    - 1.36.1
+    - 1.37.0
+  - dependency-name: github.com/spf13/cobra
+    versions:
+    - 1.1.2
+  - dependency-name: github.com/tendermint/tm-db
+    versions:
+    - 0.6.4