Ignore Dependabot semver-major updates for first-party *-PSModule actions

Author: MariusStorhaug

.github/dependabot.yml

@@ -19,3 +19,12 @@ updates:
       github-actions:
         patterns:
           - "*"
+    ignore:
+      # Temporary: freeze major bumps of our own *-PSModule lifecycle actions
+      # until the version-calculation refactor (#326) lands. A premature major
+      # bump of Publish-PSModule (#358) broke the publish pipeline; this stops
+      # Dependabot from re-proposing that class of change until the refactor is
+      # in place and the actions can be adopted together.
+      - dependency-name: "PSModule/*-PSModule"
+        update-types:
+          - version-update:semver-major