chore: add 3.15 to remaining libraries; add 3.15 testing

Author: parthea

.github/workflows/unittest.yml

@@ -18,7 +18,7 @@ jobs:
     strategy:
       fail-fast: true
       matrix:
-        python: ['3.9', '3.10', "3.11", "3.12", "3.13", "3.14"]
+        python: ['3.9', '3.10', "3.11", "3.12", "3.13", "3.14", "3.15"]
     steps:
     - name: Checkout
       uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6

.librarian/generator-input/client-post-processing/bigtable-integration.yaml

@@ -385,6 +385,7 @@ replacements:
           "3.12",
           "3.13",
           "3.14",
+          "3.15",
       ]
 
       UNIT_TEST_STANDARD_DEPENDENCIES = [

.librarian/generator-input/client-post-processing/spanner-integration.yaml

@@ -649,6 +649,7 @@ replacements:
           "3.12",
           "3.13",
           "3.14",
+          "3.15",
       ]
       UNIT_TEST_STANDARD_DEPENDENCIES = [
           "mock",

packages/bigframes/noxfile.py

@@ -60,7 +60,7 @@
 
 DEFAULT_PYTHON_VERSION = "3.14"
 
-ALL_PYTHON = ["3.10", "3.11", "3.12", "3.13", "3.14"]
+ALL_PYTHON = ["3.10", "3.11", "3.12", "3.13", "3.14", "3.15"]
 UNIT_TEST_STANDARD_DEPENDENCIES = [
     "mock",
     PYTEST_VERSION,

packages/bigquery-magics/noxfile.py

@@ -41,6 +41,7 @@
     "3.12",
     "3.13",
     "3.14",
+    "3.15",
 ]
 
 UNIT_TEST_STANDARD_DEPENDENCIES = [

packages/bigquery-magics/testing/constraints-3.15.txt

@@ -42,6 +42,7 @@
     "3.12",
     "3.13",
     "3.14",
+    "3.15",
 ]
 
 UNIT_TEST_STANDARD_DEPENDENCIES = [

packages/db-dtypes/noxfile.py

@@ -34,6 +34,7 @@
     "3.12",
     "3.13",
     "3.14",
+    "3.15",
 ]
 ALL_PYTHON = list(UNIT_TEST_PYTHON_VERSIONS)