ci: pin macos ffmpeg version to 7.1

Author: gerwin3

.github/workflows/ci.yml

@@ -2,9 +2,9 @@ name: ci
 
 on:
   push:
-    branches: [ main ]
+    branches: [main]
   pull_request:
-    branches: [ main ]
+    branches: [main]
 
 env:
   CARGO_TERM_COLOR: always
@@ -36,7 +36,7 @@ jobs:
         run: cargo build
 
   build-macos:
-    name: build / macos / latest ffmpeg
+    name: build / macos / ffmpeg 7.1
     runs-on: macos-latest
 
     steps:
@@ -45,7 +45,7 @@ jobs:
 
       - name: Install dependencies
         run: |
-          brew install ffmpeg pkg-config
+          brew install ffmpeg@7 pkg-config
 
       - name: Setup Rust
         uses: dtolnay/rust-toolchain@stable
@@ -94,8 +94,8 @@ jobs:
           DEBIAN_FRONTEND=noninteractive apt-get update
           DEBIAN_FRONTEND=noninteractive apt-get install -y build-essential ca-certificates clang curl pkg-config
 
-#     - name: Setup Rust
-#       uses: dtolnay/rust-toolchain@stable
+      #     - name: Setup Rust
+      #       uses: dtolnay/rust-toolchain@stable
 
       # TODO: Temporarily use nightly version of Rust for tests. Stable
       # currently has a bug that causes linking to fail. The fix is in