Optimizations to the git script

ReleaseNotesBundle/Command/GitChangelog.sh

@@ -1,12 +1,10 @@
 #!/bin/bash
 
 #get tag of actual version
-actualVersionTag=$(git tag | tail -1)
-actualVersionHash=$(git rev-list -n 1 $actualVersionTag)
+ACTUAL_VERSION_TAG=$(git tag | tail -1)
 
 #get tag of the version before actual version
-beforeVersionTag=$(git tag | tail -3 | head -n 1)
-beforeVersionHash=$(git rev-list -n 1 $beforeVersionTag)
+PREVIOUS_VERSION_TAG=$(git tag | tail -3 | head -n 1)
 
 #echo $listOfTickets
-git log --pretty="format:%s" $beforeVersionHash..$actualVersionHash
+git log --pretty="format:%s" "$PREVIOUS_VERSION_TAG".."$ACTUAL_VERSION_TAG"

composer.json

@@ -4,10 +4,10 @@
   "keywords": ["log","logging","git log"],
   "require": {
     "php": ">=7.0.0",
+    "ext-json": "*",
     "phpunit/phpunit": "^8.5",
     "symfony/console": "*",
     "guzzlehttp/guzzle": "*"
-
   },
   "license": "MIT",
   "authors": [