disable native build on macos

this fails with:

  [error] Error: No instances of org.apache.fontbox.ttf.BufferedRandomAccessFile are allowed in the image heap as this
  class should be initialized at image runtime. Object has been initialized without the native-image initialization
  instrumentation and the stack trace can't be tracked.

when i add `org.apache.fontbox.ttf.BufferedRandomAccessFile` to `--initialize-at-run-time` i get the following error:

  [error] Error: Classes that should be initialized at run time got initialized during image building:
  [error]  org.apache.fontbox.ttf.BufferedRandomAccessFile the class was requested to be initialized at run time
           (from the command line). org.apache.fontbox.ttf.BufferedRandomAccessFile has been initialized without
           the native-image initialization instrumentation and the stack trace can't be tracked.
           Try avoiding to initialize the class that caused initialization of org.apache.fontbox.ttf.BufferedRandomAccessFile

this is a bug in pdfbox:

  - https://issues.apache.org/jira/browse/TIKA-2862
  - apache/pdfbox#69

.github/workflows/native-image.yml

@@ -11,7 +11,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest, macOS-latest]
+        os: [ ubuntu-latest ]
         include:
           - os: ubuntu-latest
             artifact: reno-linux-x64