ci: defer Solaris

Solaris is a Tier2 target so defer it until after tier1 completes like
the others.

.github/workflows/ci.yaml

@@ -128,8 +128,9 @@ jobs:
       - name: Execute run-docker.sh
         run: ./ci/run-docker.sh ${{ matrix.target }}
 
-  solaris:
+  test_solaris:
     name: Solaris
+    needs: [test_tier1, style_check]
     runs-on: ubuntu-latest
     strategy:
       fail-fast: true
@@ -173,10 +174,10 @@ jobs:
     name: success
     runs-on: ubuntu-22.04
     needs:
+      - style_check
+      - test_solaris
       - test_tier1
       - test_tier2
-      - solaris
-      - style_check
       - verify_build
     # Github branch protection is exceedingly silly and treats "jobs skipped because a dependency
     # failed" as success. So we have to do some contortions to ensure the job fails if any of its