Run sanity check for integration tests first

If that test fails, running all other tests doesn't make sense. This test only
takes a few seconds to run. So running it right away will make the pipeline
fail faster.

.github/workflows/clippy_bors.yml

@@ -206,6 +206,7 @@ jobs:
       max-parallel: 6
       matrix:
         integration:
+        - 'matthiaskrgr/clippy_ci_panic_test'
         - 'rust-lang/cargo'
         - 'rust-lang/chalk'
         - 'rust-lang/rustfmt'
@@ -220,7 +221,6 @@ jobs:
         - 'rust-itertools/itertools'
         - 'rust-lang-nursery/failure'
         - 'rust-lang/log'
-        - 'matthiaskrgr/clippy_ci_panic_test'
 
     runs-on: ubuntu-latest