Update llvm-sys to make building easier

This removes the need for fiddling around with PATH and LIBRARY_PATH on
macOS and FreeBSD. See
https://gitlab.com/taricorp/llvm-sys.rs/-/merge_requests/45 for more
details.

Changelog: other

.github/workflows/tests.yml

@@ -133,8 +133,6 @@ jobs:
   freebsd-amd64:
     name: FreeBSD AMD64
     runs-on: ubuntu-latest
-    env:
-      LIBRARY_PATH: /usr/local/lib
     steps:
       - uses: actions/checkout@v4
       - uses: actions/cache@v4
@@ -150,6 +148,6 @@ jobs:
           operating_system: freebsd
           version: '14.0'
           memory: 8G
-          environment_variables: 'CARGO_HOME RUSTUP_HOME LIBRARY_PATH CARGO_REGISTRIES_CRATES_IO_PROTOCOL'
+          environment_variables: 'CARGO_HOME RUSTUP_HOME CARGO_REGISTRIES_CRATES_IO_PROTOCOL'
           image_url: 'https://github.com/inko-lang/freebsd-builder/releases/download/v0.8.0/freebsd-14.0-x86-64.qcow2'
           run: ./ci/freebsd.sh

ci/mac.sh

@@ -15,8 +15,5 @@ rustup-init --quiet -y --no-modify-path --profile minimal \
 echo "::endgroup::"
 
 echo "::group::Updating PATH"
-echo "$(brew --prefix llvm@${LLVM_VERSION})/bin" >> $GITHUB_PATH
-echo "LIBRARY_PATH=$(brew --prefix llvm@${LLVM_VERSION})/lib:$(brew --prefix zstd)/lib" \
-    >> $GITHUB_ENV
 echo "${CARGO_HOME}/bin" >> $GITHUB_PATH
 echo "::endgroup::"

docs/source/setup/installation.md

@@ -273,41 +273,12 @@ Older versions of Fedora aren't supported.
 sudo pkg install llvm17 rust git
 ```
 
-You may have to set the `LIBRARY_PATH` variable as follows:
-
-```bash
-export LIBRARY_PATH="/usr/local/lib"
-```
-
-Without this the linker may fail to find the zstd and libffi libraries, which
-are needed by LLVM on FreeBSD.
-
 ### macOS
 
 ```bash
 brew install llvm@17 rust git
 ```
 
-You may have to set `LIBRARY_PATH` as follows:
-
-```bash
-export LIBRARY_PATH="$(brew --prefix llvm@17)/lib:$(brew --prefix zstd)/lib"
-```
-
-You may also have to add the LLVM `bin` directory to your `PATH` as follows:
-
-```bash
-export PATH="$(brew --prefix llvm@17)/bin:$PATH"
-```
-
-Without setting these variables, it's possible building of Inko fails due to the
-build process not finding the necessary LLVM libraries.
-
-::: tip
-See [this Homebrew issue](https://github.com/Homebrew/brew/issues/13481) for
-details on why this might be necessary.
-:::
-
 ### Ubuntu
 
 For Ubuntu 24.04 and newer: