[nongnu] elpa/buttercup updated (f7c30e5ba7 -> dfbef21772)

[ELPA Syncer]

elpasync pushed a change to branch elpa/buttercup.

      from  f7c30e5ba7 Test on GNU Emacs 29.3
       new  d67be6aed0 tests: Disable pre-Oclosure tests for Emacs 30+
       new  85adc9018e tests: Test on Emacs 29.4 and release-snapshot
       new  c0e4d17c90 Define buttercup--thunk-p without Oclosures
       new  dfbef21772 Find the stackframe marker in interpreted-function 
objects


Summary of changes:
 .github/workflows/test.yml |  2 ++
 buttercup.el               | 17 ++++++++++++-----
 tests/test-buttercup.el    |  4 ++++
 3 files changed, 18 insertions(+), 5 deletions(-)