doc: requirements: stick to breathe < 4.33

Looks like the 4.33 release has some more issues, so let's wait until
everything gets fixed before allowing future versions.

Ref. breathe-doc/breathe#805

(cherry picked from commit 10da718)

Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
GitOrigin-RevId: 10da718
Change-Id: I58f8a3bef0474da6eb980efdebed5ca4698f9349
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/zephyr/+/3463028
Tested-by: CopyBot Service Account <copybot.service@gmail.com>
Reviewed-by: Keith Short <keithshort@chromium.org>
Tested-by: Keith Short <keithshort@chromium.org>
Commit-Queue: Keith Short <keithshort@chromium.org>

scripts/requirements-doc.txt

@@ -1,6 +1,6 @@
 # DOC: used to generate docs
 
-breathe>=4.30,!=4.33
+breathe>=4.30,<4.33 # 4.33: disabled due to #803 and #805 issues
 sphinx~=4.0
 sphinx_rtd_theme~=1.0
 sphinx-tabs