[chore]: Bump github.com/jackc/pgx/v4 from 4.17.2 to 4.18.1 (#1595)

Bumps [github.com/jackc/pgx/v4](https://github.com/jackc/pgx) from 4.17.2 to 4.18.1.
- [Release notes](https://github.com/jackc/pgx/releases)
- [Changelog](https://github.com/jackc/pgx/blob/v4.18.1/CHANGELOG.md)
- [Commits](https://github.com/jackc/pgx/compare/v4.17.2...v4.18.1)

---
updated-dependencies:
- dependency-name: github.com/jackc/pgx/v4
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

vendor/github.com/jackc/pgconn/pgconn.go

@@ -128,19 +128,13 @@ func ConnectWithOptions(ctx context.Context, connString string, parseConfigOptio
 // authentication error will terminate the chain of attempts (like libpq:
 // https://www.postgresql.org/docs/11/libpq-connect.html#LIBPQ-MULTIPLE-HOSTS) and be returned as the error. Otherwise,
 // if all attempts fail the last error is returned.
-func ConnectConfig(ctx context.Context, config *Config) (pgConn *PgConn, err error) {
+func ConnectConfig(octx context.Context, config *Config) (pgConn *PgConn, err error) {
 	// Default values are set in ParseConfig. Enforce initial creation by ParseConfig rather than setting defaults from
 	// zero values.
 	if !config.createdByParseConfig {
 		panic("config must be created by ParseConfig")
 	}
 
-	// ConnectTimeout restricts the whole connection process.
-	if config.ConnectTimeout != 0 {
-		var cancel context.CancelFunc
-		ctx, cancel = context.WithTimeout(ctx, config.ConnectTimeout)
-		defer cancel()
-	}
 	// Simplify usage by treating primary config and fallbacks the same.
 	fallbackConfigs := []*FallbackConfig{
 		{
@@ -150,7 +144,7 @@ func ConnectConfig(ctx context.Context, config *Config) (pgConn *PgConn, err err
 		},
 	}
 	fallbackConfigs = append(fallbackConfigs, config.Fallbacks...)
-
+	ctx := octx
 	fallbackConfigs, err = expandWithIPs(ctx, config.LookupFunc, fallbackConfigs)
 	if err != nil {
 		return nil, &connectError{config: config, msg: "hostname resolving error", err: err}
@@ -163,6 +157,14 @@ func ConnectConfig(ctx context.Context, config *Config) (pgConn *PgConn, err err
 	foundBestServer := false
 	var fallbackConfig *FallbackConfig
 	for _, fc := range fallbackConfigs {
+		// ConnectTimeout restricts the whole connection process.
+		if config.ConnectTimeout != 0 {
+			var cancel context.CancelFunc
+			ctx, cancel = context.WithTimeout(octx, config.ConnectTimeout)
+			defer cancel()
+		} else {
+			ctx = octx
+		}
 		pgConn, err = connect(ctx, config, fc, false)
 		if err == nil {
 			foundBestServer = true
@@ -1252,8 +1254,11 @@ func (pgConn *PgConn) CopyFrom(ctx context.Context, r io.Reader, sql string) (Co
 	abortCopyChan := make(chan struct{})
 	copyErrChan := make(chan error, 1)
 	signalMessageChan := pgConn.signalMessage()
+	var wg sync.WaitGroup
+	wg.Add(1)
 
 	go func() {
+		defer wg.Done()
 		buf := make([]byte, 0, 65536)
 		buf = append(buf, 'd')
 		sp := len(buf)
@@ -1307,6 +1312,8 @@ func (pgConn *PgConn) CopyFrom(ctx context.Context, r io.Reader, sql string) (Co
 		}
 	}
 	close(abortCopyChan)
+	// Make sure io goroutine finishes before writing.
+	wg.Wait()
 
 	buf = buf[:0]
 	if copyErr == io.EOF || pgErr != nil {