(chore): generate 0.12.7 release notes (#2253)

Author: ilan-gold

docs/release-notes/0.12.7.md

@@ -0,0 +1,12 @@
+(v0.12.7)=
+### 0.12.7 {small}`2025-12-16`
+
+#### Documentation
+
+- Add cruft config & update contributors {smaller}`zethson` ({pr}`2223`)
+
+#### Bug fixes
+
+- Handle `pandas.options.future.infer_string` {smaller}`P Angerer` {smaller}`I Gold` ({pr}`2133`)
+- Ensure there are no dangling file handles in {func}`anndata.experimental.concat_on_disk` when passing `.h5ad`-terminated strings as path inputs. {user}`ilan-gold` ({pr}`2218`)
+- Ensure {attr}`anndata.experimental.backed.Dataset2D.true_index` is carried over when subsetting by columns i.,e `ds[[col1, col2]]` {user}`ilan-gold` ({pr}`2220`)