Fix Benchmarks Workflow (#2902)

* Test new conda release

* No concurrency for faster debugging

* Remove pull request target

* Remove if statement and comment out tests

* Pin libmambapy

* Reset triggers

* Revert tests

.github/workflows/benchmarks.yml

@@ -72,8 +72,9 @@ jobs:
             python
             asv=0.6.4
             mamba
+            libmambapy<2.0
             conda-build
-            conda=24.9.0
+            conda=24.11.0
 
       - name: Accept all asv questions
         run: asv machine --yes