[TASK] Update container image versions

New core-testing-* images have been build and published in
the TYPO3 testing-infrastructure repository and pulled to
the core ci gitlab runner instances. [1][2]

This change modifies `Build/Scripts/runTests.sh` to set
new image version to ensure the usage for all changes
based on this change.

For information what changed in the image see the patches
in the testing-infrastrucure repository linked below.

* core-testing-php74 => 2.7
* core-testing-php80 => 2.7
* core-testing-php81 => 2.11
* core-testing-php82 => 1.10
* core-testing-php83 => 1.11

[1] https://git.typo3.org/typo3/CI/testing-infrastructure/-/commit/e6719d303eacf2f377e308c800b474b735145d61
[2] GHSA-7c6p-848j-wh5h

Resolves: #103096
Releases: main, 13.0, 12.4, 11.5
Change-Id: If9c5ae00334acc4fa5a1417dcbf9f77d31dff62d
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/82887
Reviewed-by: Stefan Bürk <stefan@buerk.tech>
Tested-by: core-ci <typo3@b13.com>
Tested-by: Stefan Bürk <stefan@buerk.tech>

Build/Scripts/runTests.sh

@@ -162,19 +162,19 @@ cleanRenderedDocumentationFiles() {
 getPhpImageVersion() {
     case ${1} in
         7.4)
-            echo -n "2.6"
+            echo -n "2.7"
             ;;
         8.0)
-            echo -n "2.6"
+            echo -n "2.7"
             ;;
         8.1)
-            echo -n "2.10"
+            echo -n "2.11"
             ;;
         8.2)
-            echo -n "1.9"
+            echo -n "1.10"
             ;;
         8.3)
-            echo -n "1.10"
+            echo -n "1.11"
             ;;
     esac
 }