Bump version to 3.1.5

[ea-rus]

• Extract query from text2sql agent Extract query from text2sql agent #158
• Use Lower Case Naming for File Upload & KB Creation Use Lower Case Naming for File Upload & KB Creation #157

[github-actions]

Coverage Report

File	Stmts	Miss	Cover	Missing
mindsdb_sdk
agents.py	203	52	74%	33, 101, 104, 112, 120, 138, 156, 166, 169, 173, 175, 177, 179, 181, 183, 245, 258, 262–277, 289, 298–302, 309–310, 356, 364–365, 415, 464–465, 468, 475, 496–498, 502–506
databases.py	45	2	96%	109, 137
handlers.py	39	1	97%	77
jobs.py	97	7	93%	41, 53, 81, 85, 147–150
knowledge_bases.py	126	15	88%	58–61, 155, 159–166, 171–175, 254–257, 326, 343
ml_engines.py	42	3	93%	94, 126, 128
models.py	210	19	91%	109, 140–141, 222, 231, 233, 303, 339, 348, 372, 397, 491, 499, 518, 534, 542, 567, 571, 584
projects.py	64	1	98%	160
query.py	13	1	92%	14
skills.py	53	3	94%	43, 45, 49
tables.py	130	15	88%	140–142, 145, 165, 192, 203–204, 209, 224, 227, 321, 342–347, 356, 376
views.py	37	2	95%	105, 138
mindsdb_sdk/connectors
rest_api.py	225	42	81%	19–29, 35–36, 51, 54–55, 75–77, 98, 101, 108–111, 144–152, 173–174, 209–212, 226–227, 281–286
mindsdb_sdk/utils
agents.py	50	4	92%	72, 79–81
mind.py	43	43	0%	1–121
openai.py	85	30	65%	37–40, 83–85, 107, 148–158, 215–216, 234–240, 258–276
table_schema.py	21	21	0%	1–54
TOTAL	1570	261	83%

Tests	Skipped	Failures	Errors	Time
28	0 💤	0 ❌	0 🔥	10.261s ⏱️