[repo] Prepare release core-1.9.0-alpha.1 (#5633)

github-actions[bot] · web-flow · commit 7dd39b08fe5a · 2024-05-20T11:36:32.000-07:00
Co-authored-by: github-actions[bot] &lt;41898282+github-actions[bot]@users.noreply.github.com&gt;
diff --git a/src/OpenTelemetry.Api.ProviderBuilderExtensions/CHANGELOG.md b/src/OpenTelemetry.Api.ProviderBuilderExtensions/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 ## Unreleased
 
+## 1.9.0-alpha.1
+
+Released 2024-May-20
+
 ## 1.8.1
 
 Released 2024-Apr-17
diff --git a/src/OpenTelemetry.Api/CHANGELOG.md b/src/OpenTelemetry.Api/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 ## Unreleased
 
+## 1.9.0-alpha.1
+
+Released 2024-May-20
+
 * **Breaking change:** Fix space character encoding from `+` to `%20`
   for baggage item values when propagating baggage as defined in
   [W3C Baggage propagation format specification](https://www.w3.org/TR/baggage/).
diff --git a/src/OpenTelemetry.Exporter.Console/CHANGELOG.md b/src/OpenTelemetry.Exporter.Console/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 ## Unreleased
 
+## 1.9.0-alpha.1
+
+Released 2024-May-20
+
 ## 1.8.1
 
 Released 2024-Apr-17
diff --git a/src/OpenTelemetry.Exporter.InMemory/CHANGELOG.md b/src/OpenTelemetry.Exporter.InMemory/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 ## Unreleased
 
+## 1.9.0-alpha.1
+
+Released 2024-May-20
+
 ## 1.8.1
 
 Released 2024-Apr-17
diff --git a/src/OpenTelemetry.Exporter.OpenTelemetryProtocol/CHANGELOG.md b/src/OpenTelemetry.Exporter.OpenTelemetryProtocol/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 ## Unreleased
 
+## 1.9.0-alpha.1
+
+Released 2024-May-20
+
 * `User-Agent` header format changed from
   `OTel-OTLP-Exporter-Dotnet/{NuGet Package Version}+{Commit Hash}`
   to `OTel-OTLP-Exporter-Dotnet/{NuGet Package Version}`.
diff --git a/src/OpenTelemetry.Exporter.Zipkin/CHANGELOG.md b/src/OpenTelemetry.Exporter.Zipkin/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 ## Unreleased
 
+## 1.9.0-alpha.1
+
+Released 2024-May-20
+
 ## 1.8.1
 
 Released 2024-Apr-17
diff --git a/src/OpenTelemetry.Extensions.Hosting/CHANGELOG.md b/src/OpenTelemetry.Extensions.Hosting/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 ## Unreleased
 
+## 1.9.0-alpha.1
+
+Released 2024-May-20
+
 * Reverted obsoletion of `OpenTelemetryBuilder`.
   ([#5571](https://github.com/open-telemetry/opentelemetry-dotnet/pull/5571))
 
diff --git a/src/OpenTelemetry.Extensions.Propagators/CHANGELOG.md b/src/OpenTelemetry.Extensions.Propagators/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 ## Unreleased
 
+## 1.9.0-alpha.1
+
+Released 2024-May-20
+
 ## 1.8.1
 
 Released 2024-Apr-17
diff --git a/src/OpenTelemetry/CHANGELOG.md b/src/OpenTelemetry/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 ## Unreleased
 
+## 1.9.0-alpha.1
+
+Released 2024-May-20
+
 * **Experimental (pre-release builds only):** Exposed `ExemplarReservoir` as a
   public API and added support for setting an `ExemplarReservoir` factory
   function when configuring a view (applies to individual metrics).
