[chore] Fix CI/CD snapshot / release (#4068)

🤦

Reviewed-on: https://codeberg.org/superseriousbusiness/gotosocial/pulls/4068
Co-authored-by: tobi <tobi.smethurst@protonmail.com>
Co-committed-by: tobi <tobi.smethurst@protonmail.com>

.woodpecker/release.yaml

@@ -1,7 +1,6 @@
 # https://woodpecker-ci.org/docs/usage/workflow-syntax#when---global-workflow-conditions
 when:
-  - event: push
+  - event: tag
-    branch: main
 
 steps:
   release:

.woodpecker/snapshot.yaml

@@ -1,6 +1,7 @@
 # https://woodpecker-ci.org/docs/usage/workflow-syntax#when---global-workflow-conditions
 when:
-  - event: tag
+  - event: push
+    branch: main
 
 steps:
   snapshot: