Fail fast when pinned version is missing for latest.release lookups

Previously lookupPinnedVersion silently returned null for missing latest.release entries,

causing dependencies to fall back to live Maven Central resolution and silently breaking

reproducibility. The + range case already threw; make latest.release behave the same.

Author: trask

conventions/src/main/kotlin/io.opentelemetry.instrumentation.base.gradle.kts

@@ -54,27 +54,18 @@ fun getPinnedVersions(): Map<String, String> {
 fun lookupPinnedVersion(group: String?, name: String, version: String?): String? {
   if (!pinLatestDeps || group == null) return null
   val pinned = getPinnedVersions()
-  return if (version == "latest.release") {
-    pinned["$group:$name#+"]
+  val key = if (version == "latest.release") {
+    "$group:$name#+"
   } else if (version != null && version.contains("+")) {
-    val rangeKey = "$group:$name#$version"
-    val rangeVersion = pinned[rangeKey]
-    if (rangeVersion != null) {
-      rangeVersion
-    } else {
-      // Range-specific key is missing from the pinned versions JSON.
-      // Do NOT fall back to the base key because it could be a different major version
-      // (e.g. base key resolves to 4.x but the range "2.+" expects 2.x).
-      // Run resolveLatestDepVersions to populate the missing key.
-      throw GradleException(
-        "Pinned version missing for range key \"$rangeKey\". " +
-          "Run ./gradlew resolveLatestDepVersions -PtestLatestDeps=true -PresolveLatestDeps=true " +
-          "to regenerate .github/config/latest-dep-versions.json"
-      )
-    }
+    "$group:$name#$version"
   } else {
-    null
+    return null
   }
+  return pinned[key] ?: throw GradleException(
+    "Pinned version missing for key \"$key\". " +
+      "Run ./gradlew resolveLatestDepVersions -PtestLatestDeps=true -PresolveLatestDeps=true " +
+      "to regenerate .github/config/latest-dep-versions.json"
+  )
 }
 
 @CacheableRule