[BUG] Unable to retreive secrets with dot(s) in the name

## Vault server version
v1.21.1

## vault-action version
v3.4.0

## Describe the bug
When you want to retrieve a secret with dots in the name (es: ansible.service.user.username), you will have:

`"Error: Unable to retrieve result for data.data.ansible.service.user.username. No match data was found. Double check your Key or Selector. "
`

## To Reproduce
Save a vault secret with dot(s) in the name and try to retrieve it with the hashicorp/vault-action.
Something like:

- name: Import secret from Vault
uses: hashicorp/vault-action@4c06c5ccf5c0761b6029f56cfb1dcf5565918a3b # v3.4.0
with:
url: ${{ vars.VAULT_URL }}
method: approle
roleId: ${{ secrets.VAULT_ROLE_ID }}
secretId: ${{ secrets.VAULT_SECRET_ID }}
secrets: |
solution/project/kv2/data/path/${{ matrix.platform }} ansible.service.user.username | ANSIBLE_USER ;

## Expected behavior
Retrieve the secret with a dot in the name

Reproduce the issue with the vault-action secrets input shown in the report, using a Vault secret key containing dots such as ansible.service.user.username. Trace how that selector is parsed and matched, then verify that the action retrieves the dotted key without changing behavior for ordinary keys.

Written by the indexing model from the issue text.