Remove validation check as suggested in code review

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

Author: Copilot

.github/workflows/checkVersions.yml

@@ -94,16 +94,9 @@ jobs:
         if [[ $(git diff --name-only --cached) != '' ]]; then
           # Relevant files were staged, i.e. some version were changed
           
-          # Validate property name to prevent injection
-          propertyName="${{ inputs.currentStreamVersionProperty }}"
-          if [[ ! "$propertyName" =~ ^[a-zA-Z0-9._-]+$ ]]; then
-            echo "::error::Invalid property name: $propertyName. Must contain only alphanumeric characters, dots, hyphens, and underscores."
-            exit 1
-          fi
-          
           # Read property as stream version
           pushd ${{ inputs.working-directory }}
-          mvn help:evaluate -Dexpression="$propertyName" ${{ inputs.extra-maven-args }} --quiet '-Doutput=currentStreamVersion-value.txt'
+          mvn help:evaluate -Dexpression=${{ inputs.currentStreamVersionProperty }} ${{ inputs.extra-maven-args }} --quiet '-Doutput=currentStreamVersion-value.txt'
           streamVersion=$(<currentStreamVersion-value.txt)
           rm -f currentStreamVersion-value.txt
           popd