bump to gcov2lcov-action 1.0.4 and go 1.15 (#5)

Author: jandelgado

.github/workflows/test_and_build.yml

@@ -7,21 +7,21 @@ jobs:
     - name: Install Go
       uses: actions/setup-go@v1
       with:
-        go-version: 1.13.x
+        go-version: 1.15.x
     - name: Checkout code
       uses: actions/checkout@v1
     - name: Install golangci-lint
       run: |
         go get github.com/golangci/golangci-lint/cmd/golangci-lint
     - name: Run linters
       run: |
-        export PATH=$PATH:$(go env GOPATH)/bin   
+        export PATH=$PATH:$(go env GOPATH)/bin
         ./pre-commit
 
   test:
     strategy:
       matrix:
-        go-version: [1.12.x, 1.13.x]
+        go-version: [1.15.x]
         platform: [ubuntu-latest, macos-latest, windows-latest]
     runs-on: ${{ matrix.platform }}
     steps:
@@ -33,7 +33,7 @@ jobs:
     - name: Checkout code
       uses: actions/checkout@v1
     - name: Run tests
-      run: go test -v -covermode=count 
+      run: go test -v -covermode=count
 
   coverage:
     runs-on: ubuntu-latest
@@ -42,15 +42,15 @@ jobs:
       if: success()
       uses: actions/setup-go@v1
       with:
-        go-version: 1.13.x
+        go-version: 1.15.x
     - name: Checkout code
       uses: actions/checkout@v1
-    - name: Calc coverage 
+    - name: Calc coverage
       run: |
-        export PATH=$PATH:$(go env GOPATH)/bin   
+        export PATH=$PATH:$(go env GOPATH)/bin
         go test -v -covermode=count -coverprofile=coverage.out
     - name: Convert coverage to lcov
-      uses: jandelgado/gcov2lcov-action@v1.0.0
+      uses: jandelgado/gcov2lcov-action@v1.0.4
       with:
           infile: coverage.out
           outfile: coverage.lcov
@@ -67,7 +67,7 @@ jobs:
     - name: Install Go
       uses: actions/setup-go@v1
       with:
-        go-version: 1.13.x
+        go-version: 1.15.x
     - name: Checkout code
       uses: actions/checkout@v1
     - name: build