Pin golang version to 1.21.5 in github actions and docker

This is as otherwise we will/might get the old 1.21.4 and we want to
release with the new one.

This is to be reverted after v0.48.0 is released.

.github/workflows/build.yml

@@ -26,7 +26,7 @@ env:
   LI_DOCKER_IMAGE_ID: "loadimpact/k6"
   DOCKER_IMAGE_ID: "grafana/k6"
   GHCR_IMAGE_ID: ${{ github.repository }}
-  DEFAULT_GO_VERSION: "1.21.x"
+  DEFAULT_GO_VERSION: "1.21.5"
 
 jobs:
   configure:

.github/workflows/lint.yml

@@ -19,7 +19,7 @@ jobs:
       - name: Install Go
         uses: actions/setup-go@v3
         with:
-          go-version: 1.21.x
+          go-version: 1.21.5
           check-latest: true
       - name: Check dependencies
         run: |

.github/workflows/tc39.yml

@@ -22,7 +22,7 @@ jobs:
       - name: Install Go
         uses: actions/setup-go@v3
         with:
-          go-version: 1.21.x
+          go-version: 1.21.5
           check-latest: true
       - name: Run tests
         run: |

.github/workflows/test.yml

@@ -87,7 +87,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        go-version: [1.21.x]
+        go-version: [1.21.5]
         platform: [ubuntu-latest, windows-2019]
     runs-on: ${{ matrix.platform }}
     steps:

.github/workflows/xk6.yml

@@ -24,7 +24,7 @@ jobs:
       - name: Install Go
         uses: actions/setup-go@v3
         with:
-          go-version: 1.21.x
+          go-version: 1.21.5
           check-latest: true
       - name: Install Go tip
         if: matrix.go == 'tip'

Dockerfile

@@ -1,4 +1,4 @@
-FROM --platform=$BUILDPLATFORM golang:1.21-alpine3.18 as builder
+FROM --platform=$BUILDPLATFORM golang:1.21.5-alpine3.18 as builder
 WORKDIR $GOPATH/src/go.k6.io/k6
 COPY . .
 ARG TARGETOS TARGETARCH