ZJIT: Exclude failing ruby-bench benchmarks (ruby#15479)

Author: k0kubun

.github/workflows/zjit-macos.yml

@@ -158,7 +158,7 @@ jobs:
         include:
           # Test --call-threshold=2 with 2 iterations in total
           - ruby_opts: '--zjit-call-threshold=2'
-            bench_opts: '--warmup=1 --bench=1'
+            bench_opts: '--warmup=1 --bench=1 --excludes=fluentd,psych-load,railsbench'
             configure: '--enable-zjit=dev_nodebug' # --enable-zjit=dev is too slow
 
     runs-on: macos-14

.github/workflows/zjit-ubuntu.yml

@@ -215,7 +215,7 @@ jobs:
         include:
           # Test --call-threshold=2 with 2 iterations in total
           - ruby_opts: '--zjit-call-threshold=2'
-            bench_opts: '--warmup=1 --bench=1'
+            bench_opts: '--warmup=1 --bench=1 --excludes=fluentd,psych-load,railsbench'
             configure: '--enable-zjit=dev_nodebug' # --enable-zjit=dev is too slow
 
     runs-on: ubuntu-24.04