[workflows] Fix libclang-abi-tests to work with new version scheme (#91865)

(cherry picked from commit d06270e)

Author: tstellar

.github/workflows/libclang-abi-tests.yml

@@ -33,7 +33,6 @@ jobs:
       ABI_HEADERS: ${{ steps.vars.outputs.ABI_HEADERS }}
       ABI_LIBS: ${{ steps.vars.outputs.ABI_LIBS }}
       BASELINE_VERSION_MAJOR: ${{ steps.vars.outputs.BASELINE_VERSION_MAJOR }}
-      BASELINE_VERSION_MINOR: ${{ steps.vars.outputs.BASELINE_VERSION_MINOR }}
       LLVM_VERSION_MAJOR: ${{ steps.version.outputs.LLVM_VERSION_MAJOR }}
       LLVM_VERSION_MINOR: ${{ steps.version.outputs.LLVM_VERSION_MINOR }}
       LLVM_VERSION_PATCH: ${{ steps.version.outputs.LLVM_VERSION_PATCH }}
@@ -51,9 +50,9 @@ jobs:
         id: vars
         run: |
           remote_repo='https://github.com/llvm/llvm-project'
-          if [ ${{ steps.version.outputs.LLVM_VERSION_MINOR }} -ne 0 ] || [ ${{ steps.version.outputs.LLVM_VERSION_PATCH }} -eq 0 ]; then
+          if [ ${{ steps.version.outputs.LLVM_VERSION_PATCH }} -eq 0 ]; then
             major_version=$(( ${{ steps.version.outputs.LLVM_VERSION_MAJOR }} - 1))
-            baseline_ref="llvmorg-$major_version.0.0"
+            baseline_ref="llvmorg-$major_version.1.0"
 
             # If there is a minor release, we want to use that as the base line.
             minor_ref=$(git ls-remote --refs -t "$remote_repo" llvmorg-"$major_version".[1-9].[0-9] | tail -n1 | grep -o 'llvmorg-.\+' || true)
@@ -75,7 +74,7 @@ jobs:
           else
             {
               echo "BASELINE_VERSION_MAJOR=${{ steps.version.outputs.LLVM_VERSION_MAJOR }}"
-              echo "BASELINE_REF=llvmorg-${{ steps.version.outputs.LLVM_VERSION_MAJOR }}.0.0"
+              echo "BASELINE_REF=llvmorg-${{ steps.version.outputs.LLVM_VERSION_MAJOR }}.1.0"
               echo "ABI_HEADERS=."
               echo "ABI_LIBS=libclang.so libclang-cpp.so"
             } >> "$GITHUB_OUTPUT"