Draft: Fix for OSSL caching in github actions

[padelsbach]

This speeds up the Wolfprovider build from about 4m30 to about 1m15.

Currently, our github actions rebuild openssl for every push even though the openssl version rarely changes.

The logs show something like this for each job:

Run actions/cache@v4
  with:
    path: openssl-source
  openssl-install
  
    key: ossl-depends-openssl-3.5.0-a4[2](https://github.com/wolfSSL/wolfProvider/actions/runs/15569582457/job/43841996275?pr=152#step:4:2)6b4b8556a7da5e7ba[3](https://github.com/wolfSSL/wolfProvider/actions/runs/15569582457/job/43841996275?pr=152#step:4:3)4fddd6a6b18b64dfc21
    lookup-only: true
    enableCrossOsArchive: false
    fail-on-cache-miss: false
    save-always: false
Cache not found for input keys: ossl-depends-openssl-3.5.0-a[4](https://github.com/wolfSSL/wolfProvider/actions/runs/15569582457/job/43841996275?pr=152#step:4:4)26b4b8556a7da5e7ba34fddd[6](https://github.com/wolfSSL/wolfProvider/actions/runs/15569582457/job/43841996275?pr=152#step:4:6)a6b18b64dfc21

After this change, there is a cache hit for openssl:

Run actions/cache@v4
  
Cache hit for: ossl-depends-openssl-3.5.0
Received 230686720 of 422306499 (54.6%), 218.9 MBs/sec
Received 422306499 of 422306499 (100.0%), 206.5 MBs/sec
Cache Size: ~403 MB (422306499 B)
/usr/bin/tar -xf /home/runner/work/_temp/02abd251-f3fb-42b6-8077-7105db098cf3/cache.tzst -P -C /home/runner/work/wolfProvider/wolfProvider --use-compress-program unzstd
Cache restored successfully
Cache restored from key: ossl-depends-openssl-3.5.0