Reference to GitHub Discussions (#5928)

Take advantage of discussions to have previous conversations with
contributors before investing time working on PRs or asking
general questions.

Co-authored-by: Kevin Wittek <[email protected]>

Author: eddumelendez

.github/ISSUE_TEMPLATE/bug_report.yaml

@@ -6,7 +6,7 @@ body:
   - type: markdown
     attributes:
       value: |
-        Thanks for taking the time to fill out this bug report! Before submitting a `bug`, please make sure there is no existing issue for the one you encountered.
+        Thanks for taking the time to fill out this bug report! Before submitting a `bug`, please make sure there is no existing issue for the one you encountered and it has been discussed with the team via [discussions](https://github.com/testcontainers/testcontainers-java/discussions) or Slack.
   - type: dropdown
     id: module
     attributes:

.github/ISSUE_TEMPLATE/enhancement.yaml

@@ -6,7 +6,7 @@ body:
   - type: markdown
     attributes:
       value: |
-        Before submitting an `enhancement`, please make sure there is no existing enhancement for the one you are requesting. If so, please provide the following information:
+        Before submitting an `enhancement`, please make sure there is no existing enhancement for the one you are requesting and it has been discussed with the team via [discussions](https://github.com/testcontainers/testcontainers-java/discussions) or Slack. If so, please provide the following information:
   - type: dropdown
     id: module
     attributes:

.github/ISSUE_TEMPLATE/feature.yaml

@@ -6,7 +6,7 @@ body:
   - type: markdown
     attributes:
       value: |
-        Before submitting a `feature`, please make sure there is no existing feature for the one you are requesting. If so, please provide the following information:
+        Before submitting a `feature`, please make sure there is no existing feature for the one you are requesting and it has been discussed with the team via [discussions](https://github.com/testcontainers/testcontainers-java/discussions) or Slack. If so, please provide the following information:
   - type: dropdown
     id: module
     attributes:

docs/contributing.md

@@ -2,9 +2,9 @@
 
 * Star the project on [Github](https://github.com/testcontainers/testcontainers-java) and help spread the word :)
 * Join our [Slack group](http://slack.testcontainers.org)
-* [Post an issue](https://github.com/testcontainers/testcontainers-java/issues) if you find any bugs
+* [Start a discussion](https://github.com/testcontainers/testcontainers-java/discussions) if you have an idea, find a possible bug or have a general question.
 * Contribute improvements or fixes using a [Pull Request](https://github.com/testcontainers/testcontainers-java/pulls). If you're going to contribute, thank you! Please just be sure to:
-    * discuss with the authors on an issue ticket prior to doing anything big.
+    * discuss with the authors prior to doing anything big.
     * follow the style, naming and structure conventions of the rest of the project.
     * make commits atomic and easy to merge.
     * when updating documentation, please see [our guidance for documentation contributions](contributing_docs.md).