ci: change alert-threshold to 120% (#2880)

Apologies for the whitespace changes; if you disable them, you'll see
it's a one-line change.

See [alert
threshold](https://github.com/benchmark-action/github-action-benchmark?tab=readme-ov-file#alert-threshold-optional)
on the documentation of the action.

<details><summary>Contributors' checklist...</summary>

- [ ] Added new tests, or not needed, or not feasible
- [ ] Provided an example (e.g. screenshot) to aid review or the PR is
self-explanatory
- [ ] Updated the official documentation or not needed
- [ ] No breaking changes were made, or a `BREAKING CHANGE: xxx` message
was included in the description
- [ ] Added references to related issues and PRs
- [ ] Provided any useful hints for running manual tests
- [ ] Added new benchmarks to [generated
graphs](https://gnoland.github.io/benchmarks), if any. More info
[here](https://github.com/gnolang/gno/blob/master/.benchmarks/README.md).
</details>

.github/workflows/benchmark-master-push.yml

@@ -21,11 +21,11 @@ jobs:
     if: ${{ github.repository == 'gnolang/gno' }}
     runs-on: [self-hosted, Linux, X64, benchmarks]
     steps:
-    - name: Checkout
-      uses: actions/checkout@v4
-      with:
-        fetch-depth: 1
-    
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 1
+
     - uses: actions/setup-go@v5
       with:
         go-version: "1.22.x"
@@ -40,7 +40,7 @@ jobs:
       with:
         path: ./cache
         key: ${{ runner.os }}-benchmark
-    
+
     - name: Store benchmark results into `gh-benchmarks` branch
       uses: benchmark-action/github-action-benchmark@v1
       # see https://github.com/benchmark-action/github-action-benchmark?tab=readme-ov-file#action-inputs
@@ -52,7 +52,7 @@ jobs:
         external-data-json-path: ./cache/benchmark-data.json
         max-items-in-chart: 100
         # Show alert with commit comment on detecting possible performance regression
-        alert-threshold: '100%'
+        alert-threshold: '120%'
         fail-on-alert: true
         comment-on-alert: true
         alert-comment-cc-users: '@ajnavarro,@thehowl,@zivkovicmilos'