Migrate CI to maintained Rust toolchain action with stable compiler

.github/workflows/ci-linux.yml

@@ -16,11 +16,11 @@ jobs:
       - uses: actions/checkout@v4
         with:
           submodules: recursive
-      - name: Install latest nightly
-        uses: actions-rs/toolchain@v1
+      - name: Install Rust toolchain
+        uses: actions-rust-lang/setup-rust-toolchain@v1
         with:
-          toolchain: nightly
-          override: true
+          toolchain: stable
+          rustflags: ''
       - name: Install Deps
         run: |
           wget -qO- https://packages.lunarg.com/lunarg-signing-key-pub.asc | sudo gpg --dearmor -o /etc/apt/trusted.gpg.d/lunarg.gpg

.github/workflows/ci-macos.yml

@@ -18,11 +18,11 @@ jobs:
       - uses: actions/checkout@v4
         with:
           submodules: recursive
-      - name: Install latest nightly
-        uses: actions-rs/toolchain@v1
+      - name: Install Rust toolchain
+        uses: actions-rust-lang/setup-rust-toolchain@v1
         with:
-          toolchain: nightly
-          override: true
+          toolchain: stable
+          rustflags: ''
       - name: Install Deps
         run: |
           brew install automake fdk-aac git lame libass libtool libvorbis libvpx opus sdl shtool texi2html theora wget x264 x265 xvid nasm

.github/workflows/ci-windows.yml

@@ -19,11 +19,11 @@ jobs:
       - uses: actions/checkout@v4
         with:
           submodules: recursive
-      - name: Install latest nightly
-        uses: actions-rs/toolchain@v1
+      - name: Install Rust toolchain
+        uses: actions-rust-lang/setup-rust-toolchain@v1
         with:
-          toolchain: nightly
-          override: true
+          toolchain: stable
+          rustflags: ''
       - name: Install Vulkan SDK
         shell: pwsh
         run: |