avoid conflicts

conda_build_config.yaml

@@ -70,9 +70,9 @@ zip_keys:
 
 # The dependencies that we link against (host requirements).
 ffmpeg:
-  - 4.2
+  - 4.2.2
 freetype:
-  - 2.10
+  - 2.10.4
 glib:
   - 2.63.1
 harfbuzz:
@@ -82,16 +82,16 @@ hdf5:
 jasper:
   - 2.0.14
 jpeg:
-  - 9
+  - 9b
 libpng:
-  - 1.6
+  - 1.6.37
 libtiff:
-  - 4.1
+  - 4.1.0
 mkl:
-  - 2019
+  - 2019.4
 numpy:
   - 1.16
 xz:
-  - 5
+  - 5.2.5
 zlib:
-  - 1.2
+  - 1.2.11