Use new gofumpt (#21613)

Update tinylib. Should fix CI.

`gofumpt -w .&&go generate ./...`

internal/dsync/drwmutex_test.go

@@ -69,7 +69,7 @@ func testSimpleWriteLock(t *testing.T, duration time.Duration) (locked bool) {
 		drwm3.Unlock(t.Context())
 	}
 	// fmt.Println("Write lock failed due to timeout")
-	return
+	return locked
 }
 
 func TestSimpleWriteLockAcquired(t *testing.T) {
@@ -116,7 +116,7 @@ func testDualWriteLock(t *testing.T, duration time.Duration) (locked bool) {
 		drwm2.Unlock(t.Context())
 	}
 	// fmt.Println("2nd write lock failed due to timeout")
-	return
+	return locked
 }
 
 func TestDualWriteLockAcquired(t *testing.T) {

internal/dsync/lock-args_gen.go

@@ -1,7 +1,7 @@
-package dsync
-
 // Code generated by github.com/tinylib/msgp DO NOT EDIT.
 
+package dsync
+
 import (
 	"github.com/tinylib/msgp/msgp"
 )

internal/dsync/lock-args_gen_test.go

@@ -1,7 +1,7 @@
-package dsync
-
 // Code generated by github.com/tinylib/msgp DO NOT EDIT.
 
+package dsync
+
 import (
 	"bytes"
 	"testing"

internal/dsync/locked_rand.go

@@ -33,7 +33,7 @@ func (r *lockedRandSource) Int63() (n int64) {
 	r.lk.Lock()
 	n = r.src.Int63()
 	r.lk.Unlock()
-	return
+	return n
 }
 
 // Seed uses the provided seed value to initialize the generator to a