fix: move to go 1.18

Author: Matrix86

.github/workflows/build.yml

@@ -17,7 +17,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v2
         with:
-          go-version: 1.15
+          go-version: 1.18
 
       - name: Check out code
         uses: actions/checkout@v2
@@ -34,7 +34,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v2
         with:
-          go-version: 1.15
+          go-version: 1.18
 
       - name: Check out code
         uses: actions/checkout@v2
@@ -56,7 +56,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v2
         with:
-          go-version: 1.15
+          go-version: 1.18
 
       - name: Check out code
         uses: actions/checkout@v2