Update Go to 1.25/1.26 and modernize CI

.github/workflows/fuzzing-tests.yml

@@ -8,15 +8,18 @@ on:
 
 jobs:
   fuzzing:
-    name: Fuzzing
-    runs-on: ubuntu-22.04
+    name: Fuzzing (Go ${{ matrix.go }})
+    runs-on: ubuntu-24.04
+    strategy:
+      matrix:
+        go: [ '1.25', '1.26' ]
 
     steps:
       # Checkout this repository
       - uses: actions/checkout@v6
       - uses: actions/setup-go@v6
         with:
-          go-version: '1.20'
+          go-version: ${{ matrix.go }}
 
       # Checkout the Fuzzing seed and generated corpus
       - uses: actions/checkout@v6

.github/workflows/testing.yml

@@ -11,55 +11,64 @@ on:
 
 jobs:
   gofmt:
-    name: go fmt
-    runs-on: ubuntu-22.04
+    name: go fmt (Go ${{ matrix.go }})
+    runs-on: ubuntu-24.04
+    strategy:
+      matrix:
+        go: [ '1.25', '1.26' ]
 
     steps:
       - uses: actions/checkout@v6
       - uses: actions/setup-go@v6
         with:
-          go-version:  '1.20'
+          go-version: ${{ matrix.go }}
 
       - name: Run go fmt
         if: runner.os != 'Windows'
         run: diff -u <(echo -n) <(gofmt -d -s .)
 
   govet:
-    name: go vet
-    runs-on: ubuntu-22.04
+    name: go vet (Go ${{ matrix.go }})
+    runs-on: ubuntu-24.04
+    strategy:
+      matrix:
+        go: [ '1.25', '1.26' ]
 
     steps:
       - uses: actions/checkout@v6
       - uses: actions/setup-go@v6
         with:
-          go-version: '1.20'
+          go-version: ${{ matrix.go }}
 
       - name: Run go vet
         run: make vet
 
   staticcheck:
-    name: staticcheck
-    runs-on: ubuntu-22.04
+    name: staticcheck (Go ${{ matrix.go }})
+    runs-on: ubuntu-24.04
+    strategy:
+      matrix:
+        go: [ '1.25', '1.26' ]
 
     steps:
       - uses: actions/checkout@v6
       - uses: actions/setup-go@v6
         with:
-          go-version: '1.20'
+          go-version: ${{ matrix.go }}
 
       - name: Run staticcheck
         uses: dominikh/staticcheck-action@v1.4.1
         with:
-          version: "2023.1.3"
+          version: "2026.1"
           install-go: false
           cache-key: staticcheck
 
   unittesting:
     name: unit testing (Go ${{ matrix.go }})
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     strategy:
       matrix:
-        go: [ '1.20', '1.19' ]
+        go: [ '1.25', '1.26' ]
 
     steps:
       - uses: actions/checkout@v6

go.mod

@@ -1,5 +1,11 @@
 module github.com/andygrunwald/vdf
 
-go 1.15
+go 1.25
 
 require github.com/stretchr/testify v1.11.1
+
+require (
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+)

go.sum

@@ -1,19 +1,10 @@
-github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
-github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
-github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
-github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo=
-github.com/stretchr/objx v0.5.2/go.mod h1:FRsXN1f5AsAjCGJKqEizvkpNtU+EGNCLh3NxZ/8L+MA=
-github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
-github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
-github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
 github.com/stretchr/testify v1.11.1 h1:7s2iGBzp5EwR7/aIZr8ao5+dra3wiQyKjjFuvgVKu7U=
 github.com/stretchr/testify v1.11.1/go.mod h1:wZwfW3scLgRK+23gO65QZefKpKQRnfz6sD981Nm4B6U=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=