T7892: Bump accel-ppp-ng version to d8c4d38

Changes:
```
5a7f9ee crypto: Removed CRYPTO_OPENSSL definition.
259b1fe crypto: Removed internal tomcat crypto.
16d1afc bump SonarSource/sonarqube-scan-action version
2bb8a8a pppoe: Added custom cause for service stop.
90c6d35 VPP: Added event for VPP connection lost and new/del link.
5024920 fixed branch protection issue
5de063b build(deps): bump SonarSource/sonarqube-scan-action
052f51f added CLA workflow
14f14e0 Create CLA.md
d86a0ca workflow: fixed move accel-ppp.deb to accel-ppp-ng.deb.
03e8d0b workflow: Removed add-pr-labels, label-backport, and check-pr-message actions.
853e746 workflow: Disabled modules build for ubunut:devel.
7d002a6 ipv6: Added option check around ipv6layers calls.
75f12ce Update SonarCloud action to use new version of action
bfdb0c0 Update README for acccel-ppp-ng and VPP
```

Author: sever-sever

scripts/package-build/linux-kernel/package.toml

@@ -18,7 +18,7 @@ build_cmd = "build_linux_firmware"
 
 [[packages]]
 name = "accel-ppp-ng"
-commit_id = "f5764ea"
+commit_id = "d8c4d38"
 scm_url = "https://github.com/accel-ppp/accel-ppp-ng.git"
 build_cmd = "build_accel_ppp_ng"