refactor(chart): replace the netcat command with the busybox wget variant (#26)

### Description of the change

replace the netcat command with wget commands.

### Benefits

Less noise in the log(s)

### Possible drawbacks

<!-- Describe any known limitations with your change -->
No limitations. As far as I am aware.

- Fixes #

https://gitea.com/gitea/helm-actions/pulls/23#issuecomment-1027779

### Additional information

As the PR Title suggests, it replaces the netcat command to a wget command which makes the noise in the log stop.

### Checklist

- [X] Parameters are documented in the `values.yaml` and added to the `README.md` using [readme-generator-for-helm](https://github.com/bitnami-labs/readme-generator-for-helm)
- [X] Breaking changes are documented in the `README.md`
- [X] Helm templating unittests are added (required when changing anything in `templates` folder)
- [X] Bash unittests are added (required when changing anything in `scripts` folder)
- [X] All added template resources MUST render a namespace in metadata

Co-authored-by: Daan Selen <dselen@systemec.nl>
Reviewed-on: https://gitea.com/gitea/helm-actions/pulls/26
Reviewed-by: ChristopherHX <christopherhx@noreply.gitea.com>
Co-authored-by: Daan Selen <dselen@nerthus.nl>
Co-committed-by: Daan Selen <dselen@nerthus.nl>

unittests/helm/statefulset.yaml

@@ -92,9 +92,12 @@ tests:
       - equal:
           path: spec.template.spec.initContainers[0].command[2]
           value: |
-            while ! nc -z git.example.com 80; do
-              sleep 5
+            echo 'Trying to reach Gitea on http://git.example.com'
+            while ! wget --no-check-certificate -qO- http://git.example.com; do
+              sleep 3
+              echo "Trying again in 3 seconds..."
             done
+            echo "Gitea has been reached!"
   - it: renders a StatefulSet https (with correct GITEA_INSTANCE_URL env from giteaRootURL)
     template: templates/statefulset.yaml
     set:
@@ -117,9 +120,12 @@ tests:
       - equal:
           path: spec.template.spec.initContainers[0].command[2]
           value: |
-            while ! nc -z git.example.com 443; do
-              sleep 5
+            echo 'Trying to reach Gitea on https://git.example.com'
+            while ! wget --no-check-certificate -qO- https://git.example.com; do
+              sleep 3
+              echo "Trying again in 3 seconds..."
             done
+            echo "Gitea has been reached!"
   - it: renders a StatefulSet https (with correct GITEA_INSTANCE_URL env from giteaRootURL)
     template: templates/statefulset.yaml
     set:
@@ -142,9 +148,12 @@ tests:
       - equal:
           path: spec.template.spec.initContainers[0].command[2]
           value: |
-            while ! nc -z git.example.com 8443; do
-              sleep 5
+            echo 'Trying to reach Gitea on https://git.example.com:8443'
+            while ! wget --no-check-certificate -qO- https://git.example.com:8443; do
+              sleep 3
+              echo "Trying again in 3 seconds..."
             done
+            echo "Gitea has been reached!"
   - it: allows adding custom environment variables to the docker-in-docker container
     template: templates/statefulset.yaml
     set: