CRM: Port back 5.8.0 release changelog, readme and package updates (#30796)

* Preparing changelog and readme for CRM 5.8 release

* Next version

---------

Co-authored-by: cleacos <[email protected]>

Committed via a GitHub action: https://github.com/Automattic/jetpack/actions/runs/5015437369

Author: gogdzl

composer.json

@@ -8,7 +8,7 @@
 	},
 	"require-dev": {
 		"yoast/phpunit-polyfills": "1.0.4",
-		"automattic/jetpack-changelogger": "^3.3.3"
+		"automattic/jetpack-changelogger": "^3.3.4-alpha"
 	},
 	"autoload": {
 		"classmap": [

composer.lock

@@ -6,7 +6,7 @@
 	"require": {},
 	"require-dev": {
 		"yoast/phpunit-polyfills": "1.0.4",
-		"automattic/jetpack-changelogger": "^3.3.3",
+		"automattic/jetpack-changelogger": "^3.3.4-alpha",
 		"automattic/wordbless": "0.4.2"
 	},
 	"suggest": {

vendor/automattic/jetpack-mu-wpcom/composer.json

@@ -7,10 +7,10 @@
             "dist": {
                 "type": "path",
                 "url": "/tmp/jetpack-build/Automattic/jetpack-mu-wpcom",
-                "reference": "f6434b778281334f681c6846fd0fd16a4d019e25"
+                "reference": "fef645b5b81a0da9459405a71b0b0728204dfca9"
             },
             "require-dev": {
-                "automattic/jetpack-changelogger": "^3.3.3",
+                "automattic/jetpack-changelogger": "^3.3.4-alpha",
                 "automattic/wordbless": "0.4.2",
                 "yoast/phpunit-polyfills": "1.0.4"
             },

vendor/composer/installed.json

@@ -13,7 +13,7 @@
         'automattic/jetpack-mu-wpcom' => array(
             'pretty_version' => '2.2.1-alpha',
             'version' => '2.2.1.0-alpha',
-            'reference' => 'f6434b778281334f681c6846fd0fd16a4d019e25',
+            'reference' => 'fef645b5b81a0da9459405a71b0b0728204dfca9',
             'type' => 'jetpack-library',
             'install_path' => __DIR__ . '/../automattic/jetpack-mu-wpcom',
             'aliases' => array(),