[ci] Bump all node_modules cache keys (#32671)

I'm seeing a lot of instances of

> Failed to save: Unable to reserve cache with key
runtime-and-compiler-node_modules-v5-X64-Linux-e454609794aae66da9909c77dd6efa073eceff7f44d6527611f8465e102578b4,
another job may be creating this cache.

which is adding ~20 seconds to every step. Let's try to bust the cache
following this
[comment](https://github.com/actions/cache/issues/485#issuecomment-744145040)
and see if that helps.
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[//]: # (BEGIN SAPLING FOOTER)
Stack created with [Sapling](https://sapling-scm.com). Best reviewed
with [ReviewStack](https://reviewstack.dev/facebook/react/pull/32671).
* #32672
* __->__ #32671

.github/workflows/runtime_commit_artifacts.yml

@@ -80,7 +80,7 @@ jobs:
         with:
           path: |
             **/node_modules
-          key: runtime-release-node_modules-v5-${{ runner.arch }}-${{ runner.os }}-${{ hashFiles('yarn.lock', 'scripts/release/yarn.lock') }}
+          key: runtime-release-node_modules-v6-${{ runner.arch }}-${{ runner.os }}-${{ hashFiles('yarn.lock', 'scripts/release/yarn.lock') }}
       - name: Ensure clean build directory
         run: rm -rf build
       - run: yarn install --frozen-lockfile