feat: update contract offers no expiration

[albertfolch-redeemeum]

No description provided.

[levalleux-ludo]

Please also add the new hash for contractualAgreement.template.md into https://github.com/bosonprotocol/core-components/blob/main/data/exchangePolicies/exchangePolicyRules.template.json#L55

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (79983d1) 84.49% compared to head (7c9d671) 84.50%.
Report is 3 commits behind head on main.

❗ Current head 7c9d671 differs from pull request most recent head b03cd1b. Consider uploading reports for the commit b03cd1b to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #616      +/-   ##
==========================================
+ Coverage   84.49%   84.50%   +0.01%     
==========================================
  Files         137      137              
  Lines        4076     4079       +3     
  Branches      716      718       +2     
==========================================
+ Hits         3444     3447       +3     
  Misses        632      632              

Flag	Coverage Δ
common	85.11% <ø> (ø)
core-sdk	50.14% <100.00%> (+0.04%)	⬆️
e2e	83.57% <100.00%> (+0.01%)	⬆️
eth-connect-sdk	18.30% <ø> (ø)
ethers-sdk	67.63% <ø> (ø)
ipfs-storage	94.02% <ø> (ø)
metadata	94.44% <ø> (ø)
unittests	53.95% <100.00%> (+0.03%)	⬆️

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