Drop macos-11.0 from CI

.github/workflows/go.yml

@@ -1,6 +1,6 @@
 name: build
 
-on: [ push, pull_request ]
+on: [push, pull_request]
 
 jobs:
   build:
@@ -10,38 +10,37 @@ jobs:
       CGO_CFLAGS_ALLOW: -Xpreprocessor
     strategy:
       matrix:
-        os: [ubuntu-18.04, ubuntu-20.04, macOS-10.15, macos-11.0]
-        
+        os: [ubuntu-18.04, ubuntu-20.04, macOS-10.15]
+
     steps:
+      - name: Set up Go 1.x
+        uses: actions/setup-go@v2
+        with:
+          go-version: ^1.13
 
-    - name: Set up Go 1.x
-      uses: actions/setup-go@v2
-      with:
-        go-version: ^1.13
+      - name: Check out code into the Go module directory
+        uses: actions/checkout@v2
 
-    - name: Check out code into the Go module directory
-      uses: actions/checkout@v2
-    
-    - name: Install linux deps
-      if: matrix.os == 'ubuntu-18.04' || matrix.os == 'ubuntu-20.04'
-      run: |
-        sudo add-apt-repository -y ppa:tonimelisma/ppa
-        sudo apt-get -y install libvips-dev
-    - name: Install macos deps
-      if: matrix.os == 'macos-10.15' || matrix.os == 'macos-11.0'
-      run: |
-        brew install vips
-    - name: Get dependencies
-      run: |
-        go get -v -t -d ./...
-    - name: Build
-      run: go build -v ./cmd/fastgallery
+      - name: Install linux deps
+        if: matrix.os == 'ubuntu-18.04' || matrix.os == 'ubuntu-20.04'
+        run: |
+          sudo add-apt-repository -y ppa:tonimelisma/ppa
+          sudo apt-get -y install libvips-dev
+      - name: Install macos deps
+        if: matrix.os == 'macos-10.15'
+        run: |
+          brew install vips
+      - name: Get dependencies
+        run: |
+          go get -v -t -d ./...
+      - name: Build
+        run: go build -v ./cmd/fastgallery
 
-    - name: Test
-      run: go test -v -coverprofile=profile.cov ./...
+      - name: Test
+        run: go test -v -coverprofile=profile.cov ./...
 
-    - name: Coveralls
-      if: matrix.os == 'ubuntu-20.04'
-      uses: shogo82148/actions-goveralls@v1
-      with:
-        path-to-profile: profile.cov
+      - name: Coveralls
+        if: matrix.os == 'ubuntu-20.04'
+        uses: shogo82148/actions-goveralls@v1
+        with:
+          path-to-profile: profile.cov