fix: add "always-bump-minor" and "always-bump-major" to versioning st…

…rategies in schema (#5262)

Adding "always-bump-minor" and "always-bump-major" to the allowed values
for versioning.
Reference PR: googleapis/release-please#1744

Co-authored-by: Jeff Ching <chingor@google.com>

packages/release-please/src/config-schema.json

@@ -48,6 +48,8 @@
                     "enum": [
                         "default",
                         "always-bump-patch",
+                        "always-bump-major",
+                        "always-bump-minor",
                         "service-pack"
                     ]
                 },