chore(deps): update sap/project-piper-action action to v1.26.1 (#8303)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
|
[SAP/project-piper-action](https://redirect.github.com/SAP/project-piper-action)
| action | patch | `v1.26.0` → `v1.26.1` |

---

### Release Notes

<details>
<summary>SAP/project-piper-action (SAP/project-piper-action)</summary>

###
[`v1.26.1`](https://redirect.github.com/SAP/project-piper-action/releases/tag/v1.26.1)

[Compare
Source](https://redirect.github.com/SAP/project-piper-action/compare/v1.26.0...v1.26.1)

##### What's Changed

##### 🧰 Maintenance

- chore: remove redundant building from source and downloading
prerelease
([#&#8203;344](https://redirect.github.com/SAP/project-piper-action/issues/344))
[@&#8203;phgermanov](https://redirect.github.com/phgermanov)

</details>

---

### Configuration

📅 **Schedule**: Branch creation - At any time (no schedule defined),
Automerge - At any time (no schedule defined).

🚦 **Automerge**: Enabled.

♻ **Rebasing**: Whenever PR is behind base branch, or you tick the
rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update
again.

---

- [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check
this box

---

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.github/workflows/open-source-security.yml

@@ -16,13 +16,13 @@ jobs:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
 
       - name: artifactPrepareVersion
-        uses: SAP/project-piper-action@321e148f55a7a440d083af3296c1e92da5e0e3e7 # v1.26.0
+        uses: SAP/project-piper-action@5314de3631eeaad852775e3d3a4bfeb4e7fa74b4 # v1.26.1
         with:
           step-name: artifactPrepareVersion
           flags: --versioningType cloud_noTag
 
       - name: detectExecuteScan
-        uses: SAP/project-piper-action@321e148f55a7a440d083af3296c1e92da5e0e3e7 # v1.26.0
+        uses: SAP/project-piper-action@5314de3631eeaad852775e3d3a4bfeb4e7fa74b4 # v1.26.1
         with:
           step-name: detectExecuteScan
           flags: '--token ${{ secrets.DETECT_TOKEN }}'