Bump go and container base image

- bump golang 1.17 -> 1.18
 - bump alpine 3.14 -> 3.15
 - revendor

 We need to use golang instead of golang:alpine because it does not
 contain git anymore. This should be fine as we are not enabling CGO,
 thus not linking against musl instead of libc.

Signed-off-by: leonnicolas <leonloechner@gmx.de>

.github/workflows/ci.yml

@@ -19,7 +19,7 @@ jobs:
     - name: Set up Go
       uses: actions/setup-go@v2
       with:
-        go-version: 1.17.1
+        go-version: 1.18
     - name: Vendor
       run: |
         make vendor
@@ -32,7 +32,7 @@ jobs:
     - name: Set up Go
       uses: actions/setup-go@v2
       with:
-        go-version: 1.17.1
+        go-version: 1.18
     - name: Build
       run: make
 
@@ -43,7 +43,7 @@ jobs:
     - name: Set up Go
       uses: actions/setup-go@v2
       with:
-        go-version: 1.17.1
+        go-version: 1.18
     - name: Build docs
       run: |
         make gen-docs
@@ -56,7 +56,7 @@ jobs:
     - name: Set up Go
       uses: actions/setup-go@v2
       with:
-        go-version: 1.17.1
+        go-version: 1.18
     - name: Build kg and kgctl for all Linux Architectures
       run: make all-build
 
@@ -67,7 +67,7 @@ jobs:
     - name: Set up Go
       uses: actions/setup-go@v2
       with:
-        go-version: 1.17.1
+        go-version: 1.18
     - name: Build kgctl for Darwin amd64
       run: make OS=darwin ARCH=amd64
     - name: Build kgctl for Darwin arm64
@@ -80,7 +80,7 @@ jobs:
     - name: Set up Go
       uses: actions/setup-go@v2
       with:
-        go-version: 1.17.1
+        go-version: 1.18
     - name: Build kgctl for Windows
       run: make OS=windows
 
@@ -91,7 +91,7 @@ jobs:
     - name: Set up Go
       uses: actions/setup-go@v2
       with:
-        go-version: 1.17.1
+        go-version: 1.18
     - name: Run Unit Tests
       run: make unit
 
@@ -103,7 +103,7 @@ jobs:
     - name: Set up Go
       uses: actions/setup-go@v2
       with:
-        go-version: 1.17.1
+        go-version: 1.18
     - name: Run e2e Tests
       run: make e2e
 
@@ -114,7 +114,7 @@ jobs:
     - name: Set up Go
       uses: actions/setup-go@v2
       with:
-        go-version: 1.17.1
+        go-version: 1.18
     - name: Lint Code
       run: make lint
 
@@ -125,7 +125,7 @@ jobs:
     - name: Set up Go
       uses: actions/setup-go@v2
       with:
-        go-version: 1.17.1
+        go-version: 1.18
     - name: Enable Experimental Docker CLI
       run: |
         echo $'{\n  "experimental": true\n}' | sudo tee /etc/docker/daemon.json
@@ -155,7 +155,7 @@ jobs:
     - name: Set up Go
       uses: actions/setup-go@v2
       with:
-        go-version: 1.17.1
+        go-version: 1.18
     - name: Enable Experimental Docker CLI
       run: |
         echo $'{\n  "experimental": true\n}' | sudo tee /etc/docker/daemon.json

.github/workflows/release.yaml

@@ -10,7 +10,7 @@ jobs:
     - name: Set up Go
       uses: actions/setup-go@v2
       with:
-        go-version: 1.17.1
+        go-version: 1.18
     - name: Build kgctl Binaries to Be Released
       run: make release
     - name: Publish Release