Update generated GitHub Actions workflow files

Author: spring-builds

.github/actions/release-train-build/action.yml

@@ -2,4 +2,4 @@ name: Build Release
 runs:
   using: composite
   steps:
-    - uses: spring-cloud/spring-cloud-github-actions/.github/actions/release-train-build@e6ce92b499e4a485ee98795203700b1b3e6dfcb7
+    - uses: spring-cloud/spring-cloud-github-actions/.github/actions/release-train-build@55cb11377657bcec9a0a89456094e0d5cdb35d2f

.github/actions/release-train-test/action.yml

@@ -2,4 +2,4 @@ name: Test Release
 runs:
   using: composite
   steps:
-    - uses: spring-cloud/spring-cloud-github-actions/.github/actions/release-train-test@e6ce92b499e4a485ee98795203700b1b3e6dfcb7
+    - uses: spring-cloud/spring-cloud-github-actions/.github/actions/release-train-test@55cb11377657bcec9a0a89456094e0d5cdb35d2f