chore(deps): update step-security/harden-runner action to v2.19.4

Author: renovate[bot]

.github/workflows/chatacter.yml

@@ -8,7 +8,7 @@ jobs:
         runs-on: ubuntu-latest
         steps:
             - name: Harden the runner (Audit all outbound calls)
-              uses: step-security/harden-runner@a5ad31d6a139d249332a2605b85202e8c0b78450 # v2.19.1
+              uses: step-security/harden-runner@9af89fc71515a100421586dfdb3dc9c984fbf411 # v2.19.4
               with:
                 egress-policy: audit
             - name: Checkout
@@ -23,7 +23,7 @@ jobs:
         runs-on: ubuntu-latest
         steps:
             - name: Harden the runner (Audit all outbound calls)
-              uses: step-security/harden-runner@a5ad31d6a139d249332a2605b85202e8c0b78450 # v2.19.1
+              uses: step-security/harden-runner@9af89fc71515a100421586dfdb3dc9c984fbf411 # v2.19.4
               with:
                 egress-policy: audit
             - uses: actions/checkout@v6.0.2