Release: Fix release issues uncovered during the 4.0.0-rc.1 release

Changes:
* Run `pre-release.sh` & `post-release.sh` scripts directly; make them
  executable
* Fix the hashbang to specify the default bash installation; note: `/bin/bash`
  would be a wrong choice as that would use an ancient 3.x version on macOS
* Make sure Bash 5 or newer is used
* Run `npm publish --tag beta` when a pre-release is being published
* Fix the `repository.url` field in `package.json` as reported by `npm publish`
* Fix a few issues reported by shellcheck

Closes gh-5697

.release-it.cjs

@@ -9,7 +9,7 @@ if ( !blogURL || !blogURL.startsWith( "https://blog.jquery.com/" ) ) {
 module.exports = {
 	preReleaseBase: 1,
 	hooks: {
-		"before:init": "bash ./build/release/pre-release.sh",
+		"before:init": "./build/release/pre-release.sh",
 		"after:version:bump":
 			"sed -i '' -e 's|main/AUTHORS.txt|${version}/AUTHORS.txt|' package.json",
 		"after:bump": "cross-env VERSION=${version} npm run build:all",

build/release/post-release.sh

@@ -1,25 +1,35 @@
-#!/bin/sh
+#!/usr/bin/env bash
 
 set -euo pipefail
 
 # $1: Version
 # $2: Blog URL
 
+if (( $(echo "$BASH_VERSION" | cut -f1 -d.) < 5 )); then
+	echo "Bash 5 or newer required. If you're on macOS, the built-in Bash is too old; install a newer one from Homebrew."
+	exit 1
+fi
+
 cdn=tmp/release/cdn
 dist=tmp/release/dist
 
-if [[ -z "$1" ]] then
+if [[ -z "$1" ]]; then
 	echo "Version is not set (1st argument)"
 	exit 1
 fi
 
-if [[ -z "$2" ]] then
+if [[ -z "$2" ]]; then
 	echo "Blog URL is not set (2nd argument)"
 	exit 1
 fi
 
+is_prerelease() {
+	local v=${1%%+*} # drop build metadata like +exp.sha
+	[[ $v == *-* ]] # true (0) if prerelease, false (1) otherwise
+}
+
 # Push files to cdn repo
-npm run release:cdn $1
+npm run release:cdn "$1"
 cd $cdn
 git add -A
 git commit -m "jquery: Add version $1"
@@ -30,17 +40,22 @@ git push
 cd -
 
 # Push files to dist repo
-npm run release:dist $1 $2
+# shellcheck disable=SC2086
+npm run release:dist "$1" "$2"
 cd $dist
 git add -A
 git commit -m "Release: $1"
 # -s to sign and annotate tag (recommended for releases)
-git tag -s $1 -m "Release: $1"
+git tag -s "$1" -m "Release: $1"
 
 # Wait for confirmation from user to push changes to dist repo
 read -p "Press enter to push changes to dist repo & publish to npm"
 git push --follow-tags
-npm publish
+if is_prerelease "$1"; then
+	npm publish --tag beta
+else
+	npm publish
+fi
 cd -
 
 # Restore AUTHORS URL

build/release/pre-release.sh

@@ -1,7 +1,12 @@
-#!/bin/sh
+#!/usr/bin/env bash
 
 set -euo pipefail
 
+if (( $(echo "$BASH_VERSION" | cut -f1 -d.) < 5 )); then
+	echo "Bash 5 or newer required. If you're on macOS, the built-in Bash is too old; install a newer one from Homebrew."
+	exit 1
+fi
+
 # Install dependencies
 npm ci
 

package.json

@@ -91,7 +91,7 @@
   },
   "repository": {
     "type": "git",
-    "url": "https://github.com/jquery/jquery.git"
+    "url": "git+https://github.com/jquery/jquery.git"
   },
   "keywords": [
     "jquery",