github actions: update go get to go install for go1.17

.github/workflows/test.yml

@@ -52,22 +52,18 @@ jobs:
         key: "${{runner.os}}-gopkg-${{hashFiles('go.sum', '.github/workflows/*.yml')}}"
 
       # Fetch the tools before checking out, so they don't modify go.mod/go.sum.
-    - name: 'go get necessary tools'
-      run: >
-        cd ..;
-        go get -u -v
-        github.com/gordonklaus/ineffassign
-        github.com/securego/gosec/cmd/gosec
-        golang.org/x/lint/golint
-        golang.org/x/tools/go/analysis/passes/shadow/cmd/shadow
-        honnef.co/go/tools/cmd/staticcheck
-    - name: 'go get necessary tools (ubuntu)'
+    - name: 'go install necessary tools'
+      run: |
+        go install -v github.com/gordonklaus/ineffassign@latest
+        go install -v github.com/securego/gosec/cmd/gosec@latest
+        go install -v golang.org/x/lint/golint@latest
+        go install -v golang.org/x/tools/go/analysis/passes/shadow/cmd/shadow@latest
+        go install -v honnef.co/go/tools/cmd/staticcheck@latest
+    - name: 'go install necessary tools (ubuntu)'
       if: always() && matrix.os == 'ubuntu-latest'
-      run: >
-        cd ..;
-        go get -u -v
-        github.com/client9/misspell/cmd/misspell
-        github.com/google/addlicense
+      run: |
+        go install -v github.com/client9/misspell/cmd/misspell@latest
+        go install -v github.com/google/addlicense@latest
 
       # Now run proper checks.
     - name: 'Check: go vet'
@@ -165,10 +161,6 @@ jobs:
     - name: "Check: go generate doesn't modify files"
       run: |
         go generate ./...
-        # TODO(maruel): Due to https://github.com/golang/go/issues/40276, ignore
-        # go.mod/go.sum modifications. Remove once a new Go toolchain fixes
-        # this.
-        git checkout HEAD -- go.mod go.sum
         # Also test for untracked files.
         TOUCHED=$(git status --porcelain --ignored)
         if ! test -z "$TOUCHED"; then
@@ -191,7 +183,7 @@ jobs:
       # Force an upgrade to test cmd with tip of tree devices.
       run: |
         cd ..
-        git clone https://github.com/periph/cmd
+        git clone --depth 1 https://github.com/periph/cmd
         cd cmd
         go mod edit -replace=periph.io/x/devices/v3=../devices
         go get -t ./...