revert all core dependency changes

Author: lukmzig

.github/workflows/elastic-search-codeception.yaml

@@ -30,7 +30,7 @@ jobs:
         strategy:
             matrix:
                 include:
-                    - { php-version: "8.3", dependencies: "highest", pimcore_version: "12.x-dev as 12.99.9", experimental: true, search_engine: "elasticsearch"}
+                    - { php-version: "8.3", dependencies: "highest", pimcore_version: "11.x-dev as 11.99.9", experimental: true, search_engine: "elasticsearch"}
 
         services:
             mariadb:

.github/workflows/open-search-codeception.yaml

@@ -32,7 +32,7 @@ jobs:
                 include:
                     - { php-version: "8.2", dependencies: "lowest", pimcore_version: "", experimental: false, search_engine: "openSearch" }
                     - { php-version: "8.3", dependencies: "highest", pimcore_version: "", experimental: false, search_engine: "openSearch"}
-                    - { php-version: "8.3", dependencies: "highest", pimcore_version: "12.x-dev as 12.99.9", experimental: true, search_engine: "openSearch"}
+                    - { php-version: "8.3", dependencies: "highest", pimcore_version: "11.x-dev as 11.99.9", experimental: true, search_engine: "openSearch"}
 
         services:
             mariadb:

.github/workflows/static-analysis.yaml

@@ -26,7 +26,7 @@ jobs:
                 include:
                     - { php-version: "8.2", dependencies: "lowest", experimental: false }
                     - { php-version: "8.3", dependencies: "highest", experimental: false }
-                    - { php-version: "8.3", dependencies: "highest", pimcore_version: "12.x-dev as 12.99.9", experimental: true }
+                    - { php-version: "8.3", dependencies: "highest", pimcore_version: "11.x-dev as 11.99.9", experimental: true }
         steps:
             - name: "Checkout code"
               uses: "actions/checkout@v2"

composer.json

@@ -18,7 +18,7 @@
   "minimum-stability": "dev",
   "require": {
     "php": "~8.2.0 || ~8.3.0 ",
-    "pimcore/pimcore": "^12.x-dev",
+    "pimcore/pimcore": "^v11.5",
     "pimcore/static-resolver-bundle": "^1.4.0 || ^2.0",
     "pimcore/opensearch-client": "^1.1",
     "pimcore/elasticsearch-client": "^1.1",