Move tester build to dedicated workflow

This procedure was not directly related to the test running procedure, so there was no good reason for it to be located
in the "Test Go" CI workflow.

Author: per1234

.github/workflows/publish-go-tester-task.yml

@@ -0,0 +1,95 @@
+# Source: https://github.com/arduino/tooling-project-assets/blob/main/workflow-templates/publish-go-tester-task.md
+name: Publish Tester Build
+
+env:
+  # See: https://github.com/actions/setup-go/tree/v2#readme
+  GO_VERSION: "1.16"
+
+# See: https://docs.github.com/en/free-pro-team@latest/actions/reference/events-that-trigger-workflows
+on:
+  create:
+  push:
+    paths:
+      - ".github/workflows/publish-go-tester-task.ya?ml"
+      - "go.mod"
+      - "go.sum"
+      - "Taskfile.ya?ml"
+      - "**.go"
+  pull_request:
+    paths:
+      - ".github/workflows/publish-go-tester-task.ya?ml"
+      - "go.mod"
+      - "go.sum"
+      - "Taskfile.ya?ml"
+      - "**.go"
+  workflow_dispatch:
+  repository_dispatch:
+
+jobs:
+  run-determination:
+    runs-on: ubuntu-latest
+    outputs:
+      result: ${{ steps.determination.outputs.result }}
+    steps:
+      - name: Determine if the rest of the workflow should run
+        id: determination
+        run: |
+          RELEASE_BRANCH_REGEX="refs/heads/[0-9]+.[0-9]+.x"
+          # The `create` event trigger doesn't support `branches` filters, so it's necessary to use Bash instead.
+          if [[ \
+            "${{ github.event_name }}" != "create" || \
+            "${{ github.ref }}" =~ $RELEASE_BRANCH_REGEX \
+          ]]; then
+            # Run the other jobs.
+            RESULT="true"
+          else
+            # There is no need to run the other jobs.
+            RESULT="false"
+          fi
+
+          echo "::set-output name=result::$RESULT"
+
+  build:
+    needs: run-determination
+    if: needs.run-determination.outputs.result == 'true'
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Set environment variables
+        run: |
+          # See: https://docs.github.com/en/actions/reference/workflow-commands-for-github-actions#setting-an-environment-variable
+          echo "BUILD_ARCHIVE_PATH=${{ runner.temp }}/libraries-repository-engine_${{ github.sha }}_Linux_64bit.zip" >> "$GITHUB_ENV"
+
+      - name: Checkout repository
+        uses: actions/checkout@v2
+
+      - name: Install Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: ${{ env.GO_VERSION }}
+
+      - name: Install Task
+        uses: arduino/setup-task@v1
+        with:
+          repo-token: ${{ secrets.GITHUB_TOKEN }}
+          version: 3.x
+
+      - name: Build application
+        run: task go:build
+
+      # actions/upload-artifact does not maintain file permissions. Putting the executable in an archive avoids the
+      # application becoming non-executable.
+      - name: Archive build
+        run: |
+          zip \
+            -j \
+            "${{ env.BUILD_ARCHIVE_PATH }}" \
+            "./libraries-repository-engine" \
+            "./LICENSE.txt"
+
+      - name: Save binary as workflow artifact
+        uses: actions/upload-artifact@v2
+        with:
+          if-no-files-found: error
+          path: ${{ env.BUILD_ARCHIVE_PATH }}
+          name: libraries-repository-engine

.github/workflows/test-go-task.yml

@@ -53,36 +53,6 @@ jobs:
 
           echo "::set-output name=result::$RESULT"
 
-  build:
-    needs: run-determination
-    if: needs.run-determination.outputs.result == 'true'
-    runs-on: ubuntu-latest
-
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v2
-
-      - name: Install Go
-        uses: actions/setup-go@v2
-        with:
-          go-version: ${{ env.GO_VERSION }}
-
-      - name: Install Task
-        uses: arduino/setup-task@v1
-        with:
-          repo-token: ${{ secrets.GITHUB_TOKEN }}
-          version: 3.x
-
-      - name: Build application
-        run: task go:build
-
-      - name: Save binary as workflow artifact
-        uses: actions/upload-artifact@v2
-        with:
-          if-no-files-found: error
-          path: libraries-repository-engine
-          name: libraries-repository-engine
-
   test:
     name: test (${{ matrix.module.path }} - ${{ matrix.operating-system }})
     needs: run-determination