Update semverver version used in CI

Author: GuillaumeGomez

.github/workflows/bors.yml

@@ -258,7 +258,7 @@ jobs:
       - uses: actions/checkout@v2
       - name: Setup Rust toolchain
         # Should update the semverver revision in semver.sh if we touch nightly ver.
-        run: TOOLCHAIN=nightly-2021-07-23 sh ./ci/install-rust.sh
+        run: TOOLCHAIN=nightly-2021-09-30 sh ./ci/install-rust.sh
       - name: Check breaking changes
         run: sh ci/semver.sh linux
 

ci/semver.sh

@@ -16,7 +16,7 @@ fi
 rustup component add rustc-dev llvm-tools-preview
 
 # Should update the nightly version in bors CI config if we touch this.
-cargo install semverver --version=0.1.47
+cargo install semverver --version=0.1.48
 
 TARGETS=
 case "${OS}" in