fix(deps): update dependency @google-cloud/spanner to v2

[renovate]

This Pull Request updates dependency @google-cloud/spanner (source) from ^1.5.0 to ^2.0.0

Note: This PR was created on a configured schedule ("after 9am and before 3pm") and will not receive updates outside those times.

Release Notes

v2.0.0

Compare Source

Breaking Changes

• Drop support for Node.js v4.x.x and v9.x.x (#​226)

• Use es style imports (#​302)
  The import syntax for this library has changed to be es module compliant.

Old code

const spanner = require('@​google-cloud/spanner')();
// or 
const Spanner = require('@​google-cloud/spanner');
const spanner = new Spanner();

New code

const {Spanner} = require('@​google-cloud/spanner');
const spanner = new Spanner();

New Features

• add runTransactionAsync method (#​294)

  const {Spanner} = require('@​google-cloud/spanner');
  const spanner = new Spanner();
  const instance = spanner.instance('my-instance');
  
  const database = instance.database('my-database');
  await database.runTransactionAsync(async (transaction) => {
  
  const [rows] = await transaction.run('SELECT * FROM MyTable');
  
  const data = rows.map(row => row.thing);
  
  await transaction.commit();
  
  return data;
  
  }).then(data => {
  
  // ...
  
  });

• feature(database): make session pool hot swappable (#​243)

Implementation Changes

• feat: use es style imports (#​302)
• fix: perform type check on grpc value (#​300)
• chore: use es classes in a few places (#​297)
• chore: do not use npm ci (#​292)
• chore: split the common module (#​289)
• test: fix strict equal assertions (#​287)
• chore: ignore package-lock.json (#​286)
• chore: use let and const (#​283)
• chore: update renovate config (#​281)
• Re-generate library using /synth.py (#​282)
• chore: use assert.deepStrictEqual instead of assert.deepEqual (#​274)
• chore: require node 8 for samples (#​273)
• test: use strictEqual in tests (#​267)
• use node_library not not internal generate method (#​247)
• Configure Renovate (#​239)
• fix: drop support for node.js 4.x and 9.x (#​226)

Dependencies

• fix(deps): update dependency google-gax to ^0.19.0 (#​298)
• chore(deps): update dependency eslint-config-prettier to v3 (#​295)
• fix(deps): update dependency google-gax to ^0.18.0 (#​278)
• chore(deps): update dependency eslint-plugin-node to v7 (#​266)
• refactor: update auth library, common-grpc (#​256)
• fix(deps): update dependency yargs to v12 (#​254)
• chore(deps): update dependency yargs to v12 (#​252)
• chore(deps): update dependency sinon to v6.0.1 (#​250)
• chore(package): update eslint to version 5.0.0 (#​240)
• chore: update sample lockfiles (#​246)
• Update to support google-gax v0.17 (#​244)
• fix(package): update @​google-cloud/common-grpc to version 0.7.1 (#​235)
• refactor: drop dependency on safe-buffer (#​232)
• refactor: remove dependency generic-pool (#​231)
• refactor: drop dependency on lodash.flatten (#​233)
• refactor: remove array-uniq as dependency (#​227)
• refactor: remove string-obj-format (#​229)
• refactor: remove methmeth as a dependency (#​228)
• chore: upgrade several dependencies (#​221)

Internal / Testing Changes

• chore: move mocha options to mocha.opts (#​272)
• refactor: drop repo-tool as an exec wrapper (#​248)
• fix: update linking for samples (#​242)
• Adding Spanner STRUCT param samples (#​219)

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