Upgrade `pnpm/action-setup` to v4.0.0 (#15427)

Marshall Bowers created 

This PR upgrades the `pnpm/action-setup` GitHub Action to v4.0.0.

Trying to see if I can fix the Renovate warning stemming from
https://github.com/pnpm/action-setup/issues/95.

Release Notes:

- N/A

Change summary

.github/workflows/danger.yml | 2 +-
.github/workflows/docs.yml   | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)

Detailed changes

.github/workflows/danger.yml 🔗 

@@ -16,7 +16,7 @@ jobs:
     steps:
       - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4
 
-      - uses: pnpm/action-setup@a3252b78c470c02df07e9d59298aecedc3ccdd6d # v3
+      - uses: pnpm/action-setup@fe02b34f77f8bc703788d5817da081398fad5dd2 # v4.0.0
         with:
           version: 9

.github/workflows/docs.yml 🔗 

@@ -16,7 +16,7 @@ jobs:
     steps:
       - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4
 
-      - uses: pnpm/action-setup@a3252b78c470c02df07e9d59298aecedc3ccdd6d # v3
+      - uses: pnpm/action-setup@fe02b34f77f8bc703788d5817da081398fad5dd2 # v4.0.0
         with:
           version: 9