chore(main): release 1.8.0 (#2192)

🤖 I have created a release *beep* *boop*
---


##
[1.8.0](v1.7.0...v1.8.0)
(2026-06-11)


### Features

* Add custom labels to exemplars
([#2191](#2191))
([fd1f3e8](fd1f3e8))
* add MetricMetadata.Builder, deprecate wide constructors
([#2202](#2202))
([adeef32](adeef32))


### Bug Fixes

* Avoid unnuecessary exemplar allocations
([#2209](#2209))
([0b6a91f](0b6a91f))
* **deps:** update spring boot to v4.1.0
([#2213](#2213))
([df25c08](df25c08))


### Documentation

* cover typed family descriptors and @stableAPI since v1.6.1
([#2181](#2181))
([7ca9f99](7ca9f99))

---
> [!IMPORTANT]
> Close and reopen this PR to trigger CI checks.

---------

Signed-off-by: Gregor Zeitlinger <gregor.zeitlinger@grafana.com>
Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
Co-authored-by: Gregor Zeitlinger <gregor.zeitlinger@grafana.com>

Author: github-actions[bot]

.github/config/.release-please-manifest.json

@@ -1,3 +1,3 @@
 {
-  ".": "1.7.0"
+  ".": "1.8.0"
 }

.github/workflows/api-diff.yml

@@ -23,6 +23,7 @@ permissions:
 
 jobs:
   api-diff:
+    if: ${{ !startsWith(github.head_ref, 'release-please--branches--') }}
     runs-on: ubuntu-24.04
     env:
       # Empty unless overridden via workflow_dispatch; the api-diff task then

CHANGELOG.md

@@ -5,7 +5,7 @@
   <parent>
     <groupId>io.prometheus</groupId>
     <artifactId>client_java</artifactId>
-    <version>1.7.1-SNAPSHOT</version>
+    <version>1.8.0</version>
   </parent>
 
   <artifactId>benchmarks</artifactId>

benchmarks/pom.xml

@@ -4,7 +4,7 @@
 
   <groupId>io.prometheus</groupId>
   <artifactId>example-custom-buckets</artifactId>
-  <version>1.7.1-SNAPSHOT</version>
+  <version>1.8.0</version>
 
   <properties>
     <maven.compiler.release>8</maven.compiler.release>

examples/example-custom-buckets/pom.xml

@@ -4,7 +4,7 @@
 
   <groupId>io.prometheus</groupId>
   <artifactId>example-greeting-service</artifactId>
-  <version>1.7.1-SNAPSHOT</version>
+  <version>1.8.0</version>
 
   <properties>
     <maven.compiler.release>17</maven.compiler.release>

examples/example-exemplars-tail-sampling/example-greeting-service/pom.xml

@@ -4,7 +4,7 @@
 
   <groupId>io.prometheus</groupId>
   <artifactId>example-hello-world-app</artifactId>
-  <version>1.7.1-SNAPSHOT</version>
+  <version>1.8.0</version>
 
   <properties>
     <maven.compiler.release>17</maven.compiler.release>

examples/example-exemplars-tail-sampling/example-hello-world-app/pom.xml

@@ -4,7 +4,7 @@
 
   <groupId>io.prometheus</groupId>
   <artifactId>example-exemplars-tail-sampling</artifactId>
-  <version>1.7.1-SNAPSHOT</version>
+  <version>1.8.0</version>
   <packaging>pom</packaging>
 
   <name>Example - Exemplars with OpenTelemetry's Tail Sampling</name>

examples/example-exemplars-tail-sampling/pom.xml

@@ -4,7 +4,7 @@
 
   <groupId>io.prometheus</groupId>
   <artifactId>example-exporter-httpserver</artifactId>
-  <version>1.7.1-SNAPSHOT</version>
+  <version>1.8.0</version>
 
   <properties>
     <maven.compiler.release>8</maven.compiler.release>

examples/example-exporter-httpserver/pom.xml

@@ -4,7 +4,7 @@
 
   <groupId>io.prometheus</groupId>
   <artifactId>example-exporter-multi-target</artifactId>
-  <version>1.7.1-SNAPSHOT</version>
+  <version>1.8.0</version>
 
   <properties>
     <maven.compiler.release>8</maven.compiler.release>