[CI] Add support for sycl-rel-** branches to CI (#12237)

add sycl-rel-** to the pre-commit/post-commit workflow supported
branches

Author: stdale-intel

.github/workflows/sycl_linux_precommit.yml

@@ -8,6 +8,7 @@ on:
     branches:
     - sycl
     - sycl-devops-pr/**
+    - sycl-rel-**
     # Do not run builds if changes are only in the following locations
     paths-ignore:
     - '.github/ISSUE_TEMPLATE/**'

.github/workflows/sycl_post_commit.yml

@@ -5,6 +5,7 @@ on:
     branches:
     - sycl
     - sycl-devops-pr/**
+    - sycl-rel-**
 
   pull_request:
     branches:

.github/workflows/sycl_windows_precommit.yml

@@ -6,6 +6,7 @@ on:
     - sycl
     - sycl-devops-pr/**
     - llvmspirv_pulldown
+    - sycl-rel-**
     # Do not run builds if changes are only in the following locations
     paths-ignore:
     - '.github/ISSUE_TEMPLATE/**'