update to Go 1.19 (#24)

Signed-off-by: Florian Lehner <[email protected]>

.github/workflows/go.yml

@@ -1,12 +1,16 @@
-on: [push, pull_request]
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ '**' ]
 
 name: Go
 jobs:
 
   test:
     strategy:
       matrix:
-        go-version: [1.14.x, 1.15.x, 1.16.x, 1.17.x, 1.18.x]
+        go-version: [1.14.x, 1.15.x, 1.16.x, 1.17.x, 1.18.x, 1.19.x]
         platform: [ubuntu-latest, macos-latest, windows-latest]
     runs-on: ${{ matrix.platform }}
     steps:
@@ -23,16 +27,17 @@ jobs:
     - name: Test with -race
       run: go test -race -count=1 ./...
     - name: Integration test
-      if: matrix.platform == 'ubuntu-latest' && startsWith(matrix.go-version, '1.18')
+      if: matrix.platform == 'ubuntu-latest' && startsWith(matrix.go-version, '1.19')
       run: |
         sudo modprobe nfnetlink_queue
         sudo ip6tables -I OUTPUT -p ipv6-icmp -j NFQUEUE --queue-num 100
         sudo iptables -I OUTPUT -p icmp -j NFQUEUE --queue-num 100
         go test -v -tags integration -exec=sudo -count=1 ./...
     - name: staticcheck.io
-      if: matrix.platform == 'ubuntu-latest' && startsWith(matrix.go-version, '1.17')
+      if: matrix.platform == 'ubuntu-latest' && startsWith(matrix.go-version, '1.19')
       uses: dominikh/[email protected]
       with:
-        version: "2021.1.1"
+        version: "2022.1.3"
+        min-go-version: "1.17"
         install-go: false
         cache-key: ${{ matrix.go-version }}