Exclude conda-build 3.28.3 due to link checking bug

This version of conda-build was not able to correctly
locate libc for satisfying links in as multioutput
recipe.

https://github.com/conda/conda-build/issues/5136

.appveyor.yml.notused

@@ -36,7 +36,7 @@ install:
     - cmd: appveyor-retry conda.exe update --yes --quiet conda
 
 
-    - cmd: appveyor-retry conda.exe install --yes --quiet "conda>4.7.12" conda-forge-pinning conda-forge-ci-setup=2.* networkx=2.3 "conda-build>=3.18" "boa"
+    - cmd: appveyor-retry conda.exe install --yes --quiet "conda>4.7.12" conda-forge-pinning conda-forge-ci-setup=2.* networkx=2.3 "conda-build>=3.18,!=3.28.3" "boa"
 
     - cmd: setup_conda_rc .\ .\recipes .\.ci_support\%CONFIG%.yaml
     - cmd: appveyor-retry run_conda_forge_build_setup

.ci_support/requirements.txt

@@ -1,6 +1,6 @@
 conda>=23.7.3
 conda-libmamba-solver>=23.7.0
-conda-build>=3.16
+conda-build>=3.16,!=3.28.3
 conda-forge-ci-setup=3.*
 conda-forge-pinning
-networkx=2.4
+networkx=2.4

.github/workflows/scripts/create_feedstocks

@@ -41,7 +41,7 @@ conda install --yes --quiet \
   conda-forge-ci-setup=3.* \
   "conda-smithy>=3.7.1,<4.0.0a0" \
   conda-forge-pinning \
-  "conda-build>=3.16" \
+  "conda-build>=3.16,!=3.28.3" \
   "gitpython>=3.0.8,<3.1.20" \
   requests \
   ruamel.yaml \