Updated known issue list to close #151 (#270)

* Updated known Issue List

* Updated known issue listing

* Enhanced Error Handling Capability to be able to flag invalid JSON files as knwon failures and updated Known Issue List.

* Enhanced Error Handling Capability to be able to flag invalid JSON files as knwon failures and updated Known Issue List.

* Update dgc-testdata-verification.yml

* Update dgc-testdata-verification.yml

* Update dgc-testdata-verification.yml

* Update dgc-testdata-verification.yml

* Update requirements.txt

* Update dgc-testdata-verification.yml

* Update dgc-testdata-verification.yml

* Update requirements.txt

* Enhanced error handling and reporting for test_picture_decode

* Fix for #213 -> test script is stricter than spec and Updated Known Issue List

* Updated Known Issue List

* Enhanced Test Coverage for SI and LV Test Dataset

* Revert test code changes for LV and SI

* Updated Known Issue List

* Update known_issues.csv

* Update known_issues.csv

* Only one type of certificate with one entry is allowed. Ref #161

* Update known issues list

Co-authored-by: Daniel Eder <danieleder@outlook.at>

tests/known_issues.csv

@@ -2,10 +2,6 @@ test_name,country,test_set,reason
 test_expected_key_usage,NL,,https://github.com/eu-digital-green-certificates/dgc-testdata/issues/146
 test_cose_schema,NL,,https://github.com/eu-digital-green-certificates/dgc-testdata/issues/107
 ,FR,test_pcr_ok,https://github.com/eu-digital-green-certificates/dgc-testdata/issues/141
-,PT,1,https://github.com/eu-digital-green-certificates/dgc-testdata/issues/151
-,PT,2,https://github.com/eu-digital-green-certificates/dgc-testdata/issues/151
-,PT,3,https://github.com/eu-digital-green-certificates/dgc-testdata/issues/151
-,PT,4,https://github.com/eu-digital-green-certificates/dgc-testdata/issues/151
 test_expiration_check,ES,1101,https://github.com/eu-digital-green-certificates/dgc-testdata/issues/169
 test_expiration_check,ES,1102,https://github.com/eu-digital-green-certificates/dgc-testdata/issues/169
 test_expiration_check,ES,1103,https://github.com/eu-digital-green-certificates/dgc-testdata/issues/169