Bump actions/setup-go from v1 to v2.1.3 (jaegertracing#1383)

Bumps [actions/setup-go](https://github.com/actions/setup-go) from v1 to v2.1.3.
- [Release notes](https://github.com/actions/setup-go/releases)
- [Commits](actions/setup-go@v1...37335c7)

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/base-checks.yaml

@@ -5,7 +5,7 @@ jobs:
   basic-checks:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/setup-go@v1
+    - uses: actions/setup-go@v2.1.3
       with:
         go-version: '1.14.4'
     - uses: actions/checkout@v1

.github/workflows/e2e-kubernetes.yaml

@@ -8,7 +8,7 @@ jobs:
       matrix:
         TEST_GROUP: [smoke, es, cassandra, streaming, examples1, examples2, generate, upgrade, istio]
     steps:
-    - uses: actions/setup-go@v1
+    - uses: actions/setup-go@v2.1.3
       with:
         go-version: '1.14.4'
     - uses: jpkrohling/setup-minikube@v1.0.2

.github/workflows/release.yaml

@@ -8,7 +8,7 @@ jobs:
   release:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/setup-go@v1
+    - uses: actions/setup-go@v2.1.3
       with:
         go-version: '1.14.4'
     - uses: actions/checkout@v1