Housekeeping (#885)

* Use gradle 7.4

* Remove issue templates

we want that people open PRs

* Configure stale to get rid of issues/PRs with no activity

.github/ISSUE_TEMPLATE/add-new-chain---network-id.md

@@ -1,25 +0,0 @@
----
-name: Add new chain / network ID
-about: Adding a new chain and/or network ID by filing an issue
-title: "[New Chain / Network]"
-labels: ''
-assignees: ''
-
----
-
-> Fill out the following to add your chain / network id, OR propose a Pull Request making your edits to the ```_data/chains.json``` file directly
-
-```
-{
-  "name": "Ethereum Mainnet",
-  "shortName": "eth",
-  "chain": "ETH",
-  "network": "mainnet",
-  "chainId": 1,
-  "networkId": 1,
-  "rpc": ["https://mainnet.infura.io"],
-  "faucets": [],
-  "infoURL: "https://ethereum.org",
-  "nativeCurrency": {"name":"Ether","symbol":"ETH","decimals":18}
-}
-```

.github/ISSUE_TEMPLATE/other.md

@@ -1,8 +0,0 @@
----
-name: other
-about: either an issue with ethereum-lists/chains or a suggestion
-title: ""
-labels: ''
-assignees: ''
-
----

.github/workflows/stale.yml

@@ -0,0 +1,15 @@
+name: 'Close stale issues and PRs'
+on:
+  schedule:
+    - cron: '30 1 * * *'
+
+jobs:
+  stale:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/stale@v4
+        with:
+          stale-issue-message: 'This issue has no activity in a while - it will be closed soon.'
+          stale-pr-message: 'This PR has no activity in a while - it will be closed soon.'
+          days-before-stale: 42
+          days-before-close: 7

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.3.3-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.4-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists