[autoinstrumentation] Bump java version (#1918)

* Bump java version

* changelog

.chloggen/bump-java.yaml

@@ -0,0 +1,16 @@
+# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix'
+change_type: enhancement
+
+# The name of the component, or a single word describing the area of concern, (e.g. operator, target allocator, github action)
+component: autoinstrumentation
+
+# A brief description of the change. Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: Bumps java autoinstrumentation version to 1.28.0
+
+# One or more tracking issues related to the change
+issues: [1918]
+
+# (Optional) One or more lines of additional information to render under the primary note.
+# These lines will be padded with 2 spaces and then inserted directly into the document.
+# Use pipe (|) for multiline entries.
+subtext:

autoinstrumentation/java/version.txt

@@ -1 +1 @@
-1.26.0
+1.28.0