upgrade cosign version
https://github.com/sigstore/cosign/releases/tag/v1.13.1
The current version is out of date and the following error occurs
```
getting signer: getting key from Fulcio: verifying SCT: updating local metadata and targets: error updating to TUF remote mirror: tuf: invalid key
```
Co-authored-by: Sampark Sharma <[email protected]>
