pre-commit: run slow hooks only in CI (#13494)

collection-build-install and check-checksums-sorted have low value for
local development, as what they check isn't likely to be touched by most
contributors
It's also enough to run once pre-commit with --hook-stage manual in CI
to run all hooks (since hooks without a 'stages' applies to all stages)

.pre-commit-config.yaml

@@ -53,6 +53,7 @@ repos:
   - repo: local
     hooks:
       - id: collection-build-install
+        stages: [manual]
         name: Build and install kubernetes-sigs.kubespray Ansible collection
         language: python
         additional_dependencies:
@@ -103,6 +104,7 @@ repos:
         pass_filenames: false
 
       - id: check-checksums-sorted
+        stages: [manual]
         name: Check that our checksums are correctly sorted by version
         entry: scripts/assert-sorted-checksums.yml
         language: python