Update workflows (#124)

* Bump golangci/golangci-lint-action from v2.5.1 to v2.5.2

Bumps [golangci/golangci-lint-action](https://github.com/golangci/golangci-lint-action) from v2.5.1 to v2.5.2.
- [Release notes](https://github.com/golangci/golangci-lint-action/releases)
- [Commits](golangci/golangci-lint-action@v2.5.1...5c56cd6)

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

* Update workflows to not use variables for versions

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

.github/workflows/coverage-main.yaml

@@ -5,9 +5,6 @@ on:
     branches:
       - main
 
-env:
-  GO_VERSION: "1.16"
-
 jobs:
   coverage-main:
     runs-on: ubuntu-latest
@@ -17,7 +14,7 @@ jobs:
       - name: Setup go
         uses: actions/setup-go@v2
         with:
-          go-version: ${{ env.GO_VERSION }}
+          go-version: "^1.16.2"
       - name: coverage
         env:
           CLIENT_ID: ${{ secrets.CLIENT_ID }}

.github/workflows/kind-e2e.yaml

@@ -10,7 +10,6 @@ on:
 
 env:
   NAME: "azad-kube-proxy"
-  GO_VERSION: "1.16"
 
 jobs:
   end-to-end:
@@ -21,7 +20,7 @@ jobs:
       - name: Setup go
         uses: actions/setup-go@v2
         with:
-          go-version: ${{ env.GO_VERSION }}
+          go-version: "^1.16.2"
       - name: Prepare
         id: prep
         run: |

.github/workflows/pr-validation.yaml

@@ -4,8 +4,6 @@ on: pull_request
 
 env:
   NAME: "azad-kube-proxy"
-  GO_VERSION: "1.16"
-  GOLANGCI_LINT_VERSION: "v1.35"
 
 jobs:
   lint:
@@ -18,11 +16,11 @@ jobs:
       - name: Setup go
         uses: actions/setup-go@v2
         with:
-          go-version: ${{ env.GO_VERSION }}
+          go-version: "^1.16.2"
       - name: golangci-lint
-        uses: golangci/golangci-lint-action@v2.5.1
+        uses: golangci/golangci-lint-action@v2.5.2
         with:
-          version: ${{ env.GOLANGCI_LINT_VERSION }}
+          version: v1.39
 
   fmt:
     runs-on: ubuntu-latest
@@ -32,7 +30,7 @@ jobs:
       - name: Setup go
         uses: actions/setup-go@v2
         with:
-          go-version: ${{ env.GO_VERSION }}
+          go-version: "^1.16.2"
       - name: Run fmt
         run: |
           make fmt
@@ -52,7 +50,7 @@ jobs:
       - name: Setup go
         uses: actions/setup-go@v2
         with:
-          go-version: ${{ env.GO_VERSION }}
+          go-version: "^1.16.2"
       - name: Run build
         run: |
           make build
@@ -65,7 +63,7 @@ jobs:
       - name: Setup go
         uses: actions/setup-go@v2
         with:
-          go-version: ${{ env.GO_VERSION }}
+          go-version: "^1.16.2"
       - name: Run test
         env:
           CLIENT_ID: ${{ secrets.CLIENT_ID }}
@@ -89,7 +87,7 @@ jobs:
       - name: Setup go
         uses: actions/setup-go@v2
         with:
-          go-version: ${{ env.GO_VERSION }}
+          go-version: "^1.16.2"
       - name: Setup gosec
         env:
           GOSEC_VERSION: "2.6.1"
@@ -128,7 +126,7 @@ jobs:
       - name: Setup go
         uses: actions/setup-go@v2
         with:
-          go-version: ${{ env.GO_VERSION }}
+          go-version: "^1.16.2"
       - name: coverage
         env:
           CLIENT_ID: ${{ secrets.CLIENT_ID }}

.github/workflows/release-plugin.yaml

@@ -5,9 +5,6 @@ on:
     types:
       - published
 
-env:
-  GO_VERSION: "1.16"
-
 jobs:
   release-plugin:
     runs-on: ubuntu-latest
@@ -26,7 +23,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v2
         with:
-          go-version: ${{ env.GO_VERSION }}
+          go-version: "^1.16.2"
       - name: Run GoReleaser
         uses: goreleaser/goreleaser-action@v2
         env: