chore: added new translations to the spanish language

[cdpazos27]

SUMMARY

Added new translations for Spanish Language - Specifically on the visualizations of Time-Series in the Spanish Language

(It's my first time creating a PR in this project, if any information is missing, please let me know)

BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF

TESTING INSTRUCTIONS

1 - Start dev server with all default configs and examples
2 - Select Language -> Spanish
3 - Create a new Visualization

Now the Time-Series visualizations should have their descriptions and title updated, in spanish

ADDITIONAL INFORMATION

• Has associated issue:
• Required feature flags:
• Changes UI
• Includes DB Migration (follow approval process in SIP-59)
  • Migration is atomic, supports rollback & is backwards-compatible
  • Confirm DB migration upgrade and downgrade tested
  • Runtime estimates and downtime expectations provided
• Introduces new feature or API
• Removes existing feature or API

[codecov]

Codecov Report

Merging #20427 (a6a8fc0) into master (467d8ef) will decrease coverage by 0.03%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master   #20427      +/-   ##
==========================================
- Coverage   66.70%   66.67%   -0.04%     
==========================================
  Files        1739     1739              
  Lines       65135    65137       +2     
  Branches     6897     6897              
==========================================
- Hits        43450    43429      -21     
- Misses      19932    19955      +23     
  Partials     1753     1753              

Flag	Coverage Δ
hive	53.70% <ø> (+<0.01%)	⬆️
mysql	82.28% <ø> (-0.02%)	⬇️
postgres	?
presto	53.56% <ø> (+<0.01%)	⬆️
python	82.71% <ø> (-0.08%)	⬇️
sqlite	82.13% <ø> (+0.04%)	⬆️
unit	50.54% <ø> (+0.39%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
superset/sql_validators/postgres.py	50.00% <0.00%> (-50.00%)	⬇️
superset/sql_validators/__init__.py	80.00% <0.00%> (-20.00%)	⬇️
superset/db_engine_specs/postgres.py	91.52% <0.00%> (-5.09%)	⬇️
superset/reports/commands/log_prune.py	85.71% <0.00%> (-3.58%)	⬇️
superset/databases/commands/validate_sql.py	92.00% <0.00%> (-2.00%)	⬇️
superset/commands/importers/v1/utils.py	92.20% <0.00%> (-1.30%)	⬇️
superset/common/query_object.py	94.73% <0.00%> (-0.53%)	⬇️
superset/views/base_api.py	97.97% <0.00%> (-0.41%)	⬇️
superset/reports/commands/execute.py	91.24% <0.00%> (-0.37%)	⬇️
superset/databases/api.py	95.17% <0.00%> (-0.33%)	⬇️
... and 3 more

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[stephenLYZ]

LGTM