[BEAM-9379] Vendor Calcite 1.26.0

[apilloud]

Verified with manual inspection and linkage checks:

./gradlew -p vendor/calcite-1_26_0 -PvendoredDependenciesOnly publishToMavenLocal
./gradlew -Ppublishing -PvendoredDependenciesOnly -PjavaLinkageArtifactIds=beam-vendor-calcite-1_26_0:0.1-SNAPSHOT :checkJavaLinkage

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• Update CHANGES.md with noteworthy changes.
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Post-Commit Tests Status (on master branch)

Lang	SDK	Dataflow	Flink	Samza	Spark	Twister2
Go		---		---		---
Java
Python				---		---
XLang				---		---

Pre-Commit Tests Status (on master branch)

---	Java	Python	Go	Website	Whitespace	Typescript
Non-portable
Portable	---		---	---	---	---

See .test-infra/jenkins/README for trigger phrase, status and link of all Jenkins jobs.

GitHub Actions Tests Status (on master branch)

See CI.md for more information about GitHub Actions CI.

[apilloud]

R: @kennknowles
This is based on #12962.
cc: @nielsbasjes

[kennknowles]

Nice verification. Given that, we can merge and release.

You could verify yet more by publishing to your local and then switching to a branch that upgrades the codebase.

[apilloud]

Run Python PreCommit

[apilloud]

I have the other half of this building, test failures look Beam related. I'll plan to merge and start the release shortly.

[codecov]

Codecov Report

Merging #14146 (e4d09bb) into master (2e9e9a8) will decrease coverage by 0.00%.
The diff coverage is n/a.

@@ Coverage Diff @@## master #14146 +/- ##
==========================================
- Coverage 83.04% 83.04% -0.01% 
==========================================
Files 469 469 Lines 58473 58493 +20 ==========================================
+ Hits 48561 48577 +16 - Misses 9912 9916 +4 

Impacted Files	Coverage Δ
...srcs/sdks/python/apache_beam/io/gcp/tests/utils.py
...m/examples/snippets/transforms/elementwise/keys.py
...apache_beam/testing/benchmarks/nexmark/__init__.py
.../srcs/sdks/python/apache_beam/runners/sdf_utils.py
.../build/srcs/sdks/python/apache_beam/tools/utils.py
...on/apache_beam/ml/gcp/naturallanguageml_test_it.py
...he_beam/examples/cookbook/multiple_output_pardo.py
...nippets/transforms/aggregation/groupintobatches.py
...python/apache_beam/typehints/typecheck_test_py3.py
...am/examples/snippets/transforms/aggregation/sum.py
... and 928 more

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