chore(deps): update nginx docker tag to v21

Author: renovate[bot]

charts/sentry/Chart.lock

@@ -22,6 +22,6 @@ dependencies:
   version: 12.5.1
 - name: nginx
   repository: oci://registry-1.docker.io/bitnamicharts
-  version: 18.2.5
-digest: sha256:2b19e9605468921ff96afb9f393ffe09d3121e5b91f32789e025851f0b66ff63
-generated: "2025-01-17T18:17:43.022337376+06:00"
+  version: 21.0.8
+digest: sha256:6def7fefdc181016bc7a1aef1cf2c1b8b27c004b34bf7b604ba1eba65b840f78
+generated: "2025-07-21T06:40:53.555463243Z"

charts/sentry/Chart.yaml

@@ -36,7 +36,7 @@ dependencies:
     condition: postgresql.enabled
   - name: nginx
     repository: oci://registry-1.docker.io/bitnamicharts
-    version: 18.2.5
+    version: 21.0.8
     condition: nginx.enabled
 maintainers:
   - name: sentry-kubernetes