refactor: update benchmark config and remove PR workflows

Author: yug49

.github/workflows/benchmarks.yml

@@ -62,8 +62,6 @@ jobs:
 
       - name: Install Foundry (Anvil)
         uses: foundry-rs/foundry-toolchain@8b0419c685ef46cb79ec93fbdc131174afceb730 # v1.6.0
-        with:
-          version: stable
 
       - name: Install Bencher CLI
         uses: bencherdev/bencher@main
@@ -97,7 +95,7 @@ jobs:
 
     steps:
       - name: Harden the runner (Audit all outbound calls)
-        uses: step-security/harden-runner@0634a2670c59f64b4a01f0f96f84700a4088b9f0 # v2.12.0
+        uses: step-security/harden-runner@20cf305ff2072d973412fa9b1e3a4f227bda3c76 # v2.14.0
         with:
           egress-policy: audit
 
@@ -116,9 +114,7 @@ jobs:
         uses: actions-rust-lang/setup-rust-toolchain@1780873c7b576612439a134613cc4cc74ce5538c # v1.15.2
 
       - name: Install Foundry (Anvil)
-        uses: foundry-rs/foundry-toolchain@v1
-        with:
-          version: stable
+        uses: foundry-rs/foundry-toolchain@8b0419c685ef46cb79ec93fbdc131174afceb730 # v1.6.0
 
       - name: Install Bencher CLI
         uses: bencherdev/bencher@main

.github/workflows/pr_benchmarks_run.yml

@@ -33,7 +33,7 @@ tracing = "0.1"
 tracing-subscriber = { version = "0.3", features = ["fmt", "env-filter"] }
 test-log = { version = "0.2.18", features = ["trace"] }
 backon = "1.6.0"
-criterion = { version = "0.5", features = ["async_tokio", "html_reports"] }
+criterion = { version = "0.8", features = ["async_tokio", "html_reports"] }
 
 [package]
 name = "event-scanner"