Update various GitHub actions

This is a port of
dechamps/ASIO401@89ecfc6 and
dechamps/ASIO401@a564038

.github/workflows/continuous-integration.yml

@@ -19,7 +19,7 @@ jobs:
             msvc_arch: amd64_x86
             build_type: Debug
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
         with:
           submodules: recursive
           # Required for version stamping (`git describe`) to work.
@@ -30,7 +30,7 @@ jobs:
       - run: cmake -S src -B src/out/build/${{ matrix.msvc_config }} -G Ninja -DCMAKE_BUILD_TYPE=${{ matrix.build_type }} -DCMAKE_INSTALL_PREFIX:PATH=${{ github.workspace }}/src/out/install/${{ matrix.msvc_config }}
       - run: cmake --build src/out/build/${{ matrix.msvc_config }}
       - run: cmake --install src/out/build/${{ matrix.msvc_config }}
-      - uses: actions/upload-artifact@v2
+      - uses: actions/upload-artifact@v4
         with:
           name: FlexASIO-${{ matrix.msvc_config }}
           path: src/out/install/${{ matrix.msvc_config }}/
@@ -66,22 +66,22 @@ jobs:
     runs-on: windows-latest
     needs: build
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
         with:
           submodules: recursive
           # Required for version stamping (`git describe`) to work.
           fetch-depth: 0
-      - uses: actions/download-artifact@v2
+      - uses: actions/download-artifact@v4
         with:
           name: FlexASIO-x64-Release
           path: src/out/install/x64-Release
-      - uses: actions/download-artifact@v2
+      - uses: actions/download-artifact@v4
         with:
           name: FlexASIO-x86-Release
           path: src/out/install/x86-Release
       - run: cmake -P installer.cmake
         working-directory: src
-      - uses: actions/upload-artifact@v2
+      - uses: actions/upload-artifact@v4
         with:
           name: FlexASIO-installer
           path: src/out/installer/*
@@ -91,13 +91,13 @@ jobs:
       permissions:
         id-token: write
       steps:
-        - uses: actions/download-artifact@v3
+        - uses: actions/download-artifact@v4
           with:
             name: FlexASIO-installer
         - uses: sigstore/[email protected]
           with:
             inputs: "*"
-        - uses: actions/upload-artifact@v3
+        - uses: actions/upload-artifact@v4
           with:
             name: sigstore
             path: "*.sigstore"
@@ -111,10 +111,10 @@ jobs:
     permissions:
       contents: write
     steps:
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         with:
           name: FlexASIO-installer
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         with:
           name: sigstore
       - uses: softprops/action-gh-release@v1