ci: bump to go 1.23 (#453)

Upgrade to Go 1.23.

Upgrade also requires bumping `golangci-lint` to v1.62.2, and upgrading
third-party test versions for some failing cases.

tests/alloc/zeroing/zeroing_test.go

@@ -21,7 +21,7 @@ func TestZeroing(t *testing.T) {
 	var got [8]uint64
 	Zeroing(&got)
 
-	for i := 0; i < 8; i++ {
+	for i := range 8 {
 		if got[i] != expect {
 			t.Errorf("got[%d] = %d; expect %d", i, got[i], expect)
 		}

tests/fixedbugs/issue387/issue387_test.go

@@ -7,7 +7,7 @@ import (
 //go:generate go run asm.go -out issue387.s -stubs stub.go
 
 func TestFloat32(t *testing.T) {
-	for i := 0; i < 10; i++ {
+	for i := range 10 {
 		got := Float32(i)
 		expect := float32(i)
 		if got != expect {
@@ -17,7 +17,7 @@ func TestFloat32(t *testing.T) {
 }
 
 func TestFloat64(t *testing.T) {
-	for i := 0; i < 10; i++ {
+	for i := range 10 {
 		got := Float64(i)
 		expect := float64(i)
 		if got != expect {

tests/thirdparty/config_test.go

@@ -94,7 +94,6 @@ func TestValidateErrors(t *testing.T) {
 		},
 	}
 	for _, c := range cases {
-		c := c // scopelint
 		t.Run(c.Name, func(t *testing.T) {
 			err := c.Item.Validate()
 			if err == nil {

tests/thirdparty/make_workflow.go

@@ -101,7 +101,7 @@ func GenerateWorkflow(s *thirdparty.Suite) ([]byte, error) {
 		g.Linef("- name: Install Go")
 		g.Linef("  uses: actions/setup-go@c4a742cab115ed795e34d4513e2cf7d472deb55f # v3.3.1")
 		g.Linef("  with:")
-		g.Linef("    go-version: 1.22.x")
+		g.Linef("    go-version: 1.23.x")
 		g.Linef("    check-latest: true")
 
 		// Checkout avo.

tests/thirdparty/packages_test.go

@@ -34,7 +34,6 @@ func TestPackages(t *testing.T) {
 	}
 
 	for _, tst := range s.Projects.Tests() {
-		tst := tst // scopelint
 		t.Run(tst.ID(), func(t *testing.T) {
 			if tst.Project.Skip() {
 				t.Skipf("skip: %s", tst.Project.Reason())

tests/thirdparty/suite.json

@@ -649,7 +649,7 @@
                 "stars": 3031
             },
             "default_branch": "master",
-            "version": "089bfa5675191fd96a44247682f76ebca03d7916",
+            "version": "v0.24.0",
             "packages": [
                 {
                     "pkg": "curve25519",
@@ -761,7 +761,7 @@
                 "stars": 124357
             },
             "default_branch": "master",
-            "version": "go1.20.1",
+            "version": "go1.23.4",
             "packages": [
                 {
                     "pkg": "src/crypto/internal/bigmod",