fix the action hash format string

Author: qrkourier

.github/workflows/cpack.yml

@@ -107,7 +107,7 @@ jobs:
         shell: bash
         env:
           KEY_PREFIX: vcpkg_cache-cpack-${{ matrix.arch.rpm }}-${{ matrix.distro.name }}-${{ matrix.distro.version }}
-          ACTION_HASH: ${{ hashFiles(format('./.github/actions/openziti-tunnel-build-action/{0}_{1}', matrix.distro.name, matrix.distro.version)) }}
+          ACTION_HASH: ${{ hashFiles(format('./.github/actions/openziti-tunnel-build-action/{0}-{1}', matrix.distro.name, matrix.distro.version)) }}
           CONFIG_HASH: ${{ hashFiles('./vcpkg.json') }}
         run: |
           set -o pipefail