fix: update golangci-lint config to v2 and fix lint issues

Author: ravisuhag

.golangci.yaml

@@ -1,27 +1,29 @@
+version: "2"
 run:
   timeout: 5m
 output:
   formats:
-    - format: colored-line-number
+    colored-line-number: {}
+formatters:
+  enable:
+    - goimports
+    - gofmt
 linters:
-  enable-all: false
-  disable-all: true
   enable:
     - govet
-    - goimports
     - thelper
     - tparallel
     - unconvert
     - wastedassign
     - revive
     - unused
-    - gofmt
     - whitespace
     - misspell
 linters-settings:
   revive:
-    ignore-generated-header: true
-    severity: warning
+    rules:
+      - name: exported
+        severity: warning
 issues:
   exclude-dirs:
     - api/proto

pkg/logger/pgx.go

@@ -10,6 +10,7 @@ import (
 // PgxLogger adapts slog to the pgx.Logger interface.
 type PgxLogger struct{}
 
+// Log implements the pgx.Logger interface using slog.
 func (l *PgxLogger) Log(ctx context.Context, level pgx.LogLevel, msg string, data map[string]interface{}) {
 	attrs := make([]slog.Attr, 0, len(data))
 	for k, v := range data {