Bump up minimum supported Go version to 1.18, and test on 1.23

Author: benhoyt

.github/workflows/tests.yml

@@ -13,7 +13,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        go: ['1.22', '1.21', '1.20', '1.19', '1.18', '1.17']
+        go: ['1.23', '1.22', '1.21', '1.20', '1.19', '1.18']
 
     name: Go ${{ matrix.go }} on Linux
 
@@ -36,7 +36,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        go: ['1.22']
+        go: ['1.23']
 
     name: Go ${{ matrix.go }} on Linux 386
 
@@ -59,7 +59,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        go: ['1.22', '1.17']
+        go: ['1.23', '1.18']
 
     name: Go ${{ matrix.go }} on Windows
 
@@ -85,7 +85,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        go: ['1.22', '1.17']
+        go: ['1.23', '1.18']
 
     name: Go ${{ matrix.go }} on macOS
 

go.mod

@@ -1,3 +1,3 @@
 module github.com/benhoyt/goawk
 
-go 1.17
+go 1.18