Update repo URL in GH workflows

Author: adriankumpf

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -9,8 +9,8 @@ body:
       description: |
         Please search to see if an issue already exists for the bug you encountered:
 
-        - [Issues](https://github.com/adriankumpf/teslamate/issues?q=)
-        - [Discussions](https://github.com/adriankumpf/teslamate/discussions)
+        - [Issues](https://github.com/teslamate-org/teslamate/issues?q=)
+        - [Discussions](https://github.com/teslamate-org/teslamate/discussions)
 
       options:
         - label: I have searched the existing issues

.github/ISSUE_TEMPLATE/config.yml

@@ -1,5 +1,5 @@
 blank_issues_enabled: false
 contact_links:
   - name: Community Support
-    url: https://github.com/adriankumpf/teslamate/discussions
+    url: https://github.com/teslamate-org/teslamate/discussions
     about: Please ask and answer questions here.

.github/workflows/buildx.yml

@@ -57,8 +57,8 @@ jobs:
           platforms: ${{ matrix.platform }}
           labels: ${{ steps.meta.outputs.labels }}
           tags: ${{ steps.docker_meta.outputs.tags }}
-          cache-from: type=registry,ref=ghcr.io/adriankumpf/teslamate:buildcache-${{ matrix.cache_id }}
-          cache-to: type=registry,ref=ghcr.io/adriankumpf/teslamate:buildcache-${{ matrix.cache_id }},mode=max
+          cache-from: type=registry,ref=ghcr.io/teslamate-org/teslamate:buildcache-${{ matrix.cache_id }}
+          cache-to: type=registry,ref=ghcr.io/teslamate-org/teslamate:buildcache-${{ matrix.cache_id }},mode=max
           outputs: type=image,name=${{ env.REGISTRY_IMAGE }},push-by-digest=true,name-canonical=true,push=true
       - name: Export digest
         run: |