[DEBUG] try revert linpng uninstallation on macos-12

Author: pmeier

.github/scripts/setup-env.sh

@@ -24,12 +24,12 @@ esac
 
 if [[ "${OS_TYPE}" == "macos" && $(uname -m) == x86_64 ]]; then
   echo '::group::Uninstall system JPEG libraries on macOS'
-  # The x86 macOS runners, e.g. the GitHub Actions native "macos-12" runner, has some JPEG and PNG libraries
-  # installed by default that interfere with our build. We uninstall them here and use the one from conda below.
-  IMAGE_LIBS=$(brew list | grep -E "jpeg|png")
-  echo "${IMAGE_LIBS}"
-  for lib in "${IMAGE_LIBS}"; do
-    brew uninstall --ignore-dependencies --force "${lib}" || true
+  # The x86 macOS runners, e.g. the GitHub Actions native "macos-12" runner, has some JPEG libraries installed by
+  # default that interfere with our build. We uninstall them here and use the one from conda below.
+  JPEG_LIBS=$(brew list | grep jpeg)
+  echo $JPEG_LIBS
+  for lib in $JPEG_LIBS; do
+    brew uninstall --ignore-dependencies --force $lib || true
   done
   echo '::endgroup::'
 fi