[TASK] Specify extension versions

composer.json

@@ -36,14 +36,14 @@
     }
   ],
   "require": {
-    "typo3/cms": "^8.7",
-    "helhum/typo3-console": "^4.2",
-    "dmitryd/typo3-realurl": "^2.1",
+    "typo3/cms": "8.7.8",
+    "helhum/typo3-console": "4.9.2",
+    "dmitryd/typo3-realurl": "2.3.0",
     "t3o/t3olayout": "dev-develop",
     "t3o/certifications": "dev-master",
-    "georgringer/news": "^6.0",
-    "apache-solr-for-typo3/solr": "^7.0",
-    "reelworx/rx-shariff": "^10.0",
+    "georgringer/news": "6.1.1",
+    "apache-solr-for-typo3/solr": "6.5.0",
+    "reelworx/rx-shariff": "10.2.0",
     "derhansen/sf_event_mgt": "dev-development",
     "t3o/typo3_roadmap": "dev-master",
     "t3o/t3o_membership": "dev-master",