Bump 1.11.

Author: maleadt

.github/workflows/ci.yml

@@ -18,7 +18,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        version: ['1.8', '1.9', '1.10', '^1.11.0-alpha2'] # 'nightly'
+        version: ['1.8', '1.9', '1.10', '^1.11.0-rc1'] # 'nightly'
         os: [ubuntu-latest, macOS-latest, windows-latest]
         arch: [x64]
         llvm_args: ['']