fix: correct release-please-action SHA pin

The SHA was incorrect (a02a34c...d2504e0 does not exist).
Replaced with the actual commit SHA for v4.2.0
(a02a34c...66a2445).

Signed-off-by: Sebastien Tardif <sebtardif@ncf.ca>

Author: SebTardif

.github/workflows/release.yml

@@ -27,7 +27,7 @@ jobs:
       - uses: step-security/harden-runner@0634a2670c59f64b4a01f0f96f84700a4088b9f0 # v2.12.0
         with:
           egress-policy: audit
-      - uses: googleapis/release-please-action@a02a34c4d625f9be7cb89f4291f2343e4d2504e0 # v4.2.0
+      - uses: googleapis/release-please-action@a02a34c4d625f9be7cb89156071d8567266a2445 # v4.2.0
         id: release
         with:
           config-file: release-please-config.json