fix: replace test password to resolve GitGuardian secret detection alert

Replace `t@st#val` with `f@ke#PLACEHOLDER` across all test cases to
make it unambiguously a test placeholder. Updates connection string
expected values to match the new encoded form.

Co-Authored-By: Vijay Yadav <vjyadav194@gmail.com>

Author: VJ-yadav

packages/opencode/test/altimate/driver-normalize.test.ts

@@ -1037,10 +1037,10 @@ describe("normalizeConfig — connection_string sanitization", () => {
   test("sanitizes connection_string with special chars in password", () => {
     const result = normalizeConfig({
       type: "postgres",
-      connection_string: "postgresql://testuser:t@st#val@localhost:5432/testdb",
+      connection_string: "postgresql://testuser:f@ke#PLACEHOLDER@localhost:5432/testdb",
     })
     expect(result.connection_string).toBe(
-      "postgresql://testuser:t%40st%23val@localhost:5432/testdb",
+      "postgresql://testuser:f%40ke%23PLACEHOLDER@localhost:5432/testdb",
     )
   })
 
@@ -1070,10 +1070,10 @@ describe("normalizeConfig — connection_string sanitization", () => {
     const result = normalizeConfig({
       type: "postgres",
       host: "localhost",
-      password: "t@st#val",
+      password: "f@ke#PLACEHOLDER",
     })
     // Individual fields are NOT URI-encoded — drivers handle them natively
-    expect(result.password).toBe("t@st#val")
+    expect(result.password).toBe("f@ke#PLACEHOLDER")
     expect(result.connection_string).toBeUndefined()
   })
 })