Update Readme + Mergify Rule for Maintained Branches (#647)

* readme maintained branches

* update mergify rule

* update dependabot labels

(cherry picked from commit 2c0c5ec)

.github/dependabot.yml

@@ -11,13 +11,11 @@ updates:
  interval: "weekly"
  open-pull-requests-limit: 10
  labels:
- - dependencies
- - dont_backport
-
+ - dependencies 
  - package-ecosystem: github-actions
  directory: "/"
  schedule:
  interval: monthly
  open-pull-requests-limit: 10
  labels:
- - dont_backport
+ - gh-action-version

.github/mergify.yml

@@ -1,13 +1,13 @@
 pull_request_rules:
  - name: backport to maintained branches
  conditions:
- - base=main
- - label!=dont_backport
+ - base~=^(main|v4|v4-ics|v5|v6)$
+ - label=BACKPORT
  actions:
  backport:
  branches:
- - v3
- - v3-ics
+ - main
+ - v4-ics
  - v4
  - v5
  - v6
@@ -21,7 +21,7 @@ pull_request_rules:
  - name: automerge backported PR's for maintained branches
  conditions:
  - label=automerge
- - base~=^(v3|v3-ics|v4|v5|v6)$
+ - base~=^(v4|v4-ics|v5|v6)$
  actions:
  merge:
  method: squash

README.md

@@ -25,14 +25,15 @@ It allows users to quickly spin up custom testnets and dev environments to test
 
 ### Maintained Branches
 
-| **Branch Name** | **IBC-Go** | **Cosmos-sdk** |
-|:----------------------------------------------------------------------------:|:----------:|:--------------:|
-| main | v7 | v0.47 |
-| [v6](https://github.com/strangelove-ventures/interchaintest/tree/v6) | v6 | v0.46 |
-| [v5](https://github.com/strangelove-ventures/interchaintest/tree/v5) | v5 | v0.46 |
-| [v4](https://github.com/strangelove-ventures/interchaintest/tree/v4) | v4 | v0.45 |
-| [v3](https://github.com/strangelove-ventures/interchaintest/tree/v3) | v3 | v0.45 |
-| [v3-ics](https://github.com/strangelove-ventures/interchaintest/tree/v3-ics) | v3 | v0.45.11-ics |
+| **Branch Name** | **IBC-Go** | **Cosmos-sdk** | **Maintained** |
+|:----------------------------------------------------------------------------:|:----------:|:--------------:|:-------------------:|
+| main | v7 | v0.47 | ✅ |
+| [v6](https://github.com/strangelove-ventures/interchaintest/tree/v6) | v6 | v0.46 | ✅ |
+| [v5](https://github.com/strangelove-ventures/interchaintest/tree/v5) | v5 | v0.46 | ✅ |
+| [v4](https://github.com/strangelove-ventures/interchaintest/tree/v4) | v4 | v0.45 | ✅ |
+| [v4-ics](https://github.com/strangelove-ventures/interchaintest/tree/v4-ics) | v4 | v0.45.x-ics | ✅ |
+| [v3](https://github.com/strangelove-ventures/interchaintest/tree/v3) | v3 | v0.45 |❌<br>(June 25 2023) |
+| [v3-ics](https://github.com/strangelove-ventures/interchaintest/tree/v3-ics) | v3 | v0.45.11-ics |❌<br>(April 24 2023)|
 
 ## Table Of Contents
 - [Building Binary](#building-binary)