Fix distribution build: pin analytics-api dep to 3.7.0-SNAPSHOT (#5455)

* Pin analytics-api dep to 3.7.0-SNAPSHOT for release builds

The distribution build (./build.sh -s false) sets
-Dopensearch.version=3.7.0, which made the dep declared as
${opensearch_version} resolve to "3.7.0" — a release coordinate that
will never exist for org.opensearch.sandbox:analytics-api. OpenSearch
core's sandbox/build.gradle deliberately disables publish tasks for
sandbox artifacts unless -Dsandbox.enabled=true AND build.snapshot=true,
explicitly to "prevent accidental inclusion of these artifacts in a
release distribution". Build 11942 fails at :opensearch-sql-plugin:compileJava
with `Could not find org.opensearch.sandbox:analytics-api:3.7.0`.

Hardcode the dep version to "3.7.0-SNAPSHOT" — same pattern already used
by core/build.gradle:67 for the same artifact. The bundled jar continues
to ship inside the SQL plugin so QueryPlanExecutor remains resolvable at
runtime even when the analytics-engine plugin is absent (verified by
loading the rebuilt plugin into a 3.7.0 cluster — all 11 plugins load
cleanly, cluster transitions to GREEN).

Resolves #5434

Signed-off-by: Ashish Agrawal <ashisagr@amazon.com>

* Use opensearch_version-derived snapshot coord for analytics-api

Address review feedback: instead of hardcoding "3.7.0-SNAPSHOT", derive
the snapshot version from ${opensearch_version} via the same tokenize
pattern build.gradle:12 already uses for opensearch_build. The dep now
auto-tracks version bumps and resolves correctly in both release-mode CI
(${opensearch_version}=3.7.0) and local snapshot builds
(${opensearch_version}=3.7.0-SNAPSHOT) without producing a malformed
"-SNAPSHOT-SNAPSHOT" suffix.

Signed-off-by: Ashish Agrawal <ashisagr@amazon.com>

---------

Signed-off-by: Ashish Agrawal <ashisagr@amazon.com>

Author: lezzago

plugin/build.gradle

@@ -160,7 +160,7 @@ dependencies {
 
     api project(":ppl")
     api project(':api')
-    implementation("org.opensearch.sandbox:analytics-api:${opensearch_version}")
+    implementation "org.opensearch.sandbox:analytics-api:${opensearch_version.tokenize('-')[0]}-SNAPSHOT"
     api project(':legacy')
     api project(':opensearch')
     api project(':prometheus')