Add BOLT to build matrix

Author: zanieb

.github/workflows/build.yml

@@ -231,13 +231,17 @@ jobs:
     name: >-
       Ubuntu
       ${{ fromJSON(matrix.free-threading) && '(free-threading)' || '' }}
+      ${{ fromJSON(matrix.bolt) && '(bolt)' || '' }}
     needs: check_source
     if: needs.check_source.outputs.run_tests == 'true'
     strategy:
       matrix:
         free-threading:
         - false
         - true
+        bolt:
+        - false
+        - true
         os:
         - ubuntu-24.04
         - ubuntu-24.04-aarch64
@@ -246,6 +250,9 @@ jobs:
         exclude:
         - os: ubuntu-24.04-aarch64
           is-fork: true
+        # Do not test BOLT with free-threading, to conserve resources
+        - bolt: true
+          free-threading: true
     uses: ./.github/workflows/reusable-ubuntu.yml
     with:
       config_hash: ${{ needs.check_source.outputs.config_hash }}