Bump rustc_lexer, cfg-if to 1.0 and add new license to check

[kjeremy]

No description provided.

[lnicola]

We only use cfg_if once, I wonder if it's worth having it (other crates bring in the older version).

[kjeremy]

I'm not sure. Since it's a bump to 1.0 I'm hoping that our other dependencies update quickly (PRs welcome!).

[kjeremy]

Interesting test failure on bors:

test tests::test_derive_proc_macro_list ... ok
thread panicked while panicking. aborting.
error: test failed, to rerun pass '-p proc_macro_srv --lib'

Caused by:
process didn't exit successfully: /home/runner/work/rust-analyzer/rust-analyzer/target/debug/deps/proc_macro_srv-32fc1aa629146b4f (signal: 4, SIGILL: illegal instruction)

I wonder if this is because rust 1.47 was just released.

[bors]

🔒 Permission denied

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[kjeremy]

bors r+

[bors]

Build succeeded:

• Rust (ubuntu-latest)
• Rust (windows-latest)
• TypeScript (ubuntu-latest)
• TypeScript (windows-latest)