MINOR: [CI] Bump docker/login-action from 4.4.0 to 4.6.0 (#1254)

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Author: dependabot[bot]

.github/workflows/rc.yml

@@ -127,7 +127,7 @@ jobs:
         with:
           repository: apache/parquet-testing
           path: arrow/cpp/submodules/parquet-testing
-      - uses: docker/login-action@af1e73f918a031802d376d3c8bbc3fe56130a9b0 # v4.4.0
+      - uses: docker/login-action@dbcb813823bdd20940b903addbd779551569679f # v4.6.0
         with:
           registry: ghcr.io
           username: ${{ github.actor }}