Update issue and PR templates

.github/ISSUE_TEMPLATE/bug-report.yml

@@ -13,10 +13,6 @@ body:
         This issue form is for reporting bugs only. Please provide as much information as possible. If a problem cannot be reproduced or understood, your issue may be closed as non-actionable.
 
         This project is covered with unit- and integration tests and successfully used in many projects. If an error seemingly related to this library occurs in your project, it's most likely not because of this library.
-
-        You can request custom support if you are a [GitHub Sponsor in a _Firebase_ tier](https://github.com/sponsors/jeromegamez). If this issue does not describe a bug and you are not a GitHub sponsor, your issue may be closed.
-
-        You can learn more about the reasoning for this project's Terms of Support at [What the FOSS](https://jerome.gamez.name/what-the-foss/).
   - type: markdown
     attributes:
       value: |

.github/ISSUE_TEMPLATE/config.yml

@@ -4,5 +4,5 @@ contact_links:
     url: https://github.com/sponsors/jeromegamez
     about: Support the continued maintenance of this project and support its maintainer by becoming a GitHub Sponsor. Requests by Sponsors will be prioritised and receive additional perks.
   - name: 🤔 Troubleshooting
-    url: https://firebase-php.readthedocs.io/en/6.x/troubleshooting.html
+    url: https://firebase-php.readthedocs.io/en/7.x/troubleshooting.html
     about: Please check the troubleshooting section of the documentation for commonly known problems.

.github/ISSUE_TEMPLATE/feature-request.yml

@@ -13,10 +13,6 @@ body:
         This issue form is for feature requests only. Please provide as much information as possible. If your feature request refers to existing functionality in other Firebase Admin SDKs, please include links to the relevant documentation and code.
 
         Requests for features that are usually only available in Client SDKs are usually considered out of scope of this SDK.
-
-        Feature requests by [GitHub Sponsors in a _Firebase_ tier](https://github.com/sponsors/jeromegamez) will be prioritised. If you are not a Sponsor, your feature request may be queued until it is backed by a GitHub Sponsor.
-
-        You can learn more about the reasoning for this project's Terms of Support at [What the FOSS](https://jerome.gamez.name/what-the-foss/).
   - type: textarea
     attributes:
       label: Describe the feature you would like to see