refactor(ci): remove unused image property configuration in maintenance scripts

We cannot use the Maven property external configuration bits (which is enabled implicitly by default), as we are using `<external>` with a Compose file. So using this option has no effect on the build! (Same as we cannot add tags this way...)

Author: poikilotherm

.github/workflows/scripts/containers/maintain-application.sh

@@ -148,8 +148,7 @@ for BRANCH in "$@"; do
       # Build the application image, but skip the configbaker image (that's a different job)!
       # shellcheck disable=SC2046
       mvn -Pct -f . deploy -Ddocker.noCache -Ddocker.platforms="${PLATFORMS}" \
-        -Dconf.skipBuild -Dbase.image="${BASE_IMAGE_REF}" \
-        -Ddocker.imagePropertyConfiguration=override $TAG_OPTIONS \
+        -Dconf.skipBuild -Dbase.image="${BASE_IMAGE_REF}" $TAG_OPTIONS \
         $( if (( DAMP_RUN )); then echo "-Ddocker.skip.push"; fi )
     else
       echo "Skipping Maven build as requested by DRY_RUN=1"

.github/workflows/scripts/containers/maintain-configbaker.sh

@@ -145,8 +145,7 @@ for BRANCH in "$@"; do
       # shellcheck disable=SC2046
       mvn -Pct -f . deploy -Ddocker.noCache -Ddocker.platforms="${PLATFORMS}" \
         -Dapp.skipBuild -Dconf.image.base="${BASE_IMAGE_REF}" \
-        -Dmaven.main.skip -Dmaven.test.skip -Dmaven.war.skip \
-        -Ddocker.imagePropertyConfiguration=override $TAG_OPTIONS \
+        -Dmaven.main.skip -Dmaven.test.skip -Dmaven.war.skip $TAG_OPTIONS \
         $( if (( DAMP_RUN )); then echo "-Ddocker.skip.push"; fi )
     else
       echo "Skipping Maven build as requested by DRY_RUN=1"