Update to current box version (phar packaging)

Current version (2.x) is really old and emitting some
warnings with php >= 8.1. So, just move to current 4.x version.

Simply change to its new incarnation (fork of the original) and
tidy up a few parameters.

Note that the phar still has a good number of limitations:
- Not all checks work (phpcs, behat...).
- Cannot post-install moodle-local_ci (vnu.jar)
- ...

But all those are pre-existing and this new version does
not change that.

Note that box requires PHP 8.1 to build the phar, but the
phar works perfectly with PHP 7.4 (our min requirement).

Fixes moodlehq#235

.github/workflows/release.yml

@@ -15,10 +15,10 @@ jobs:
       - name: Check out repository code
         uses: actions/checkout@v3
 
-      - name: Setup PHP 7.4
+      - name: Setup PHP 8.1
         uses: shivammathur/setup-php@v2
         with:
-          php-version: 7.4
+          php-version: 8.1
           ini-values: phar.readonly = false
 
       - name: Build PHAR

Makefile

@@ -72,11 +72,11 @@ ifeq (, $(wildcard vendor))
 endif
 
 build/box.phar:
-	@cd build && curl -LSs https://box-project.github.io/box2/installer.php | php
+	curl -LSs https://github.com/box-project/box/releases/download/4.3.8/box.phar -o build/box.phar
 
 build/moodle-plugin-ci.phar: build/box.phar
 	$(COMPOSER) install --no-dev --prefer-dist --classmap-authoritative --quiet
-	php -d memory_limit=-1 -d phar.readonly=false build/box.phar build
+	php -d memory_limit=-1 -d phar.readonly=false build/box.phar compile
 	$(COMPOSER) install --prefer-dist --quiet
 
 docs/CLI.md: $(CMDS)

box.json

@@ -1,5 +1,4 @@
 {
-  "chmod": "0755",
   "compression": "GZ",
   "directories": [
     "src",
@@ -39,13 +38,11 @@
       ]
     }
   ],
-  "compactors": "Herrera\\Box\\Compactor\\Php",
+  "compactors": "KevinGH\\Box\\Compactor\\Php",
   "git-version": "package_version",
   "replacements": {
     "is_boxed": "BOXED"
   },
   "intercept": true,
-  "main": "bin/moodle-plugin-ci",
-  "output": "build/moodle-plugin-ci.phar",
-  "stub": true
-}
+  "output": "build/moodle-plugin-ci.phar"
+}

docs/CHANGELOG.md

@@ -9,6 +9,9 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 The format of this change log follows the advice given at [Keep a CHANGELOG](http://keepachangelog.com).
 
 ## [Unreleased]
+### Fixed
+- Updated the PHAR packaging utility ([box](https://github.com/box-project/box)) to actual one, to avoid various issues happening with PHP 8.1 and up.
+
 ## [4.1.2] - 2023-09-02
 ### Changed
 - Modified `moodle-local_ci` composer dependencies and manage them normally, removing some ancient bits that have [stopped working with Composer 2.6.0 and up](https://github.com/composer/composer/issues/11613).