fix(deps): update module github.com/cert-manager/cert-manager to v1.16.2 [security] (#63)

| datasource | package                              | from    | to      |
| ---------- | ------------------------------------ | ------- | ------- |
| go         | github.com/cert-manager/cert-manager | v1.16.1 | v1.16.2 |

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

go.mod

@@ -5,7 +5,7 @@ go 1.23
 toolchain go1.23.3
 
 require (
-	github.com/cert-manager/cert-manager v1.16.1
+	github.com/cert-manager/cert-manager v1.16.2
 	github.com/cloudnative-pg/barman-cloud v0.0.0-20241105055149-ae6c2408bd14
 	github.com/cloudnative-pg/cloudnative-pg v1.24.1-0.20241113134512-8608232c2813
 	github.com/cloudnative-pg/cnpg-i v0.0.0-20241109002750-8abd359df734

go.sum

@@ -20,8 +20,8 @@ github.com/blang/semver/v4 v4.0.0 h1:1PFHFE6yCCTv8C1TeyNNarDzntLi7wMI5i/pzqYIsAM
 github.com/blang/semver/v4 v4.0.0/go.mod h1:IbckMUScFkM3pff0VJDNKRiT6TG/YpiHIM2yvyW5YoQ=
 github.com/cenkalti/backoff/v4 v4.3.0 h1:MyRJ/UdXutAwSAT+s3wNd7MfTIcy71VQueUuFK343L8=
 github.com/cenkalti/backoff/v4 v4.3.0/go.mod h1:Y3VNntkOUPxTVeUxJ/G5vcM//AlwfmyYozVcomhLiZE=
-github.com/cert-manager/cert-manager v1.16.1 h1:1ceFMqTtwiqY2vyfaRT85CNiVmK7pJjt3GebYCx9awY=
-github.com/cert-manager/cert-manager v1.16.1/go.mod h1:MfLVTL45hFZsqmaT1O0+b2ugaNNQQZttSFV9hASHUb0=
+github.com/cert-manager/cert-manager v1.16.2 h1:c9UU2E+8XWGruyvC/mdpc1wuLddtgmNr8foKdP7a8Jg=
+github.com/cert-manager/cert-manager v1.16.2/go.mod h1:MfLVTL45hFZsqmaT1O0+b2ugaNNQQZttSFV9hASHUb0=
 github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs=
 github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
 github.com/cloudnative-pg/api v0.0.0-20241004125129-98baa9f4957b h1:LZ9tIgKmWb8ZvyLg/J8ExXtmBtEWP2dr3Y4TU4nCq/w=