deps: update core dependencies

[renovate-bot]

This PR contains the following updates:

Package	Update	Change
com.google.auth:google-auth-library-bom	minor	0.19.0 -> 0.20.0
com.google.auth:google-auth-library-oauth2-http	minor	0.19.0 -> 0.20.0
com.google.auth:google-auth-library-credentials	minor	0.19.0 -> 0.20.0
com.google.cloud:google-cloud-core-bom	patch	1.92.2 -> 1.92.3
com.google.cloud:google-cloud-core	patch	1.92.2 -> 1.92.3
io.grpc:grpc-bom	minor	1.26.0 -> 1.27.0
io.grpc:grpc-api	minor	1.26.0 -> 1.27.0
io.grpc:grpc-netty-shaded	minor	1.26.0 -> 1.27.0

---

Release Notes

googleapis/google-auth-library-java

v0.20.0

Compare Source

Features

• updated JwtClaims.Builder methods to public (#​396) (9e5de14)

Dependencies

• update guava to 28.2-android (#​389) (70bd8ff)

googleapis/java-core

v1.92.3

Compare Source

grpc/grpc-java

v1.27.0

Compare Source

---

Renovate configuration

📅 Schedule: At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻️ Rebasing: Whenever PR becomes conflicted, or if you tick the rebase/retry checkbox below.

👻 Immortal: This PR will be recreated if closed unmerged. Get config help if that's undesired.

---

• If you want to rebase/retry this PR, check this box

---

This PR has been generated by WhiteSource Renovate. View repository job log here.

[codecov]

Codecov Report

Merging #40 into master will increase coverage by 0.03%.
The diff coverage is n/a.

@@ Coverage Diff @@ ## master #40 +/- ## ============================================ + Coverage 77.83% 77.87% +0.03%  - Complexity 1721 1722 +1  ============================================ Files 60 60 Lines 5866 5866 Branches 825 825 ============================================ + Hits 4566 4568 +2  + Misses 926 925 -1  + Partials 374 373 -1

Impacted Files	Coverage Δ	Complexity Δ
...oogle/cloud/spanner/jdbc/SingleUseTransaction.java	87% <0%> (+1%)	37% <0%> (+1%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 5205863...404e368. Read the comment docs.