Provisioning: Bump Nanogit version to include revelant bug fixes (#107172)

Bump Nanogit
This version includes multiple fixes:
- Properly parsing side-band errors.
- Handle multiple matches in GetRef .
- Properly sort tree entries with folders based on git specification.

go.mod

@@ -96,7 +96,7 @@ require (
 	github.com/grafana/grafana-openapi-client-go v0.0.0-20231213163343-bd475d63fb79 // @grafana/grafana-backend-group
 	github.com/grafana/grafana-plugin-sdk-go v0.278.0 // @grafana/plugins-platform-backend
 	github.com/grafana/loki/v3 v3.2.1 // @grafana/observability-logs
-	github.com/grafana/nanogit v0.0.0-20250619160700-ebf70d342aa5 // @grafana-app-platform-squad
+	github.com/grafana/nanogit v0.0.0-20250625082556-a4828b879bbb // @grafana-app-platform-squad
 	github.com/grafana/otel-profiling-go v0.5.1 // @grafana/grafana-backend-group
 	github.com/grafana/pyroscope-go/godeltaprof v0.1.8 // @grafana/observability-traces-and-profiling
 	github.com/grafana/pyroscope/api v1.2.1-0.20250415190842-3ff7247547ae // @grafana/observability-traces-and-profiling

go.sum

@@ -1643,8 +1643,8 @@ github.com/grafana/loki/pkg/push v0.0.0-20231124142027-e52380921608 h1:ZYk42718k
 github.com/grafana/loki/pkg/push v0.0.0-20231124142027-e52380921608/go.mod h1:f3JSoxBTPXX5ec4FxxeC19nTBSxoTz+cBgS3cYLMcr0=
 github.com/grafana/loki/v3 v3.2.1 h1:VB7u+KHfvL5aHAxgoVBvz5wVhsdGuqKC7uuOFOOe7jw=
 github.com/grafana/loki/v3 v3.2.1/go.mod h1:WvdLl6wOS+yahaeQY+xhD2m2XzkHDfKr5FZaX7D/X2Y=
-github.com/grafana/nanogit v0.0.0-20250619160700-ebf70d342aa5 h1:MAQ2B0cu0V1S91ZjVa7NomNZFjaR2SmdtvdwhqBtyhU=
-github.com/grafana/nanogit v0.0.0-20250619160700-ebf70d342aa5/go.mod h1:tN93IZUaAmnSWgL0IgnKdLv6DNeIhTJGvl1wvQMrWco=
+github.com/grafana/nanogit v0.0.0-20250625082556-a4828b879bbb h1:JR672zBiCkfiKuRRsU76TRC2q12q0VfZl2SP8jBIAJQ=
+github.com/grafana/nanogit v0.0.0-20250625082556-a4828b879bbb/go.mod h1:tN93IZUaAmnSWgL0IgnKdLv6DNeIhTJGvl1wvQMrWco=
 github.com/grafana/otel-profiling-go v0.5.1 h1:stVPKAFZSa7eGiqbYuG25VcqYksR6iWvF3YH66t4qL8=
 github.com/grafana/otel-profiling-go v0.5.1/go.mod h1:ftN/t5A/4gQI19/8MoWurBEtC6gFw8Dns1sJZ9W4Tls=
 github.com/grafana/prometheus-alertmanager v0.25.1-0.20250604130045-92c8f6389b36 h1:AjZ58JRw1ZieFH/SdsddF5BXtsDKt5kSrKNPWrzYz3Y=