[SPARK-32074][BUILD][R] Update AppVeyor R version to 4.0.2

[HyukjinKwon]

What changes were proposed in this pull request?

R version 4.0.2 was released, see https://cran.r-project.org/doc/manuals/r-release/NEWS.html. This PR targets to upgrade R version in AppVeyor CI environment.

Why are the changes needed?

To test the latest R versions before the release, and see if there are any regressions.

Does this PR introduce any user-facing change?

No.

How was this patch tested?

AppVeyor will test.

[SparkQA]

Test build #124422 has finished for PR 28909 at commit 281b9c1.

• This patch passes all tests.
• This patch merges cleanly.
• This patch adds no public classes.

[SparkQA]

Test build #124453 has finished for PR 28909 at commit 4b0a539.

• This patch fails some tests.
• This patch merges cleanly.
• This patch adds no public classes.

[SparkQA]

Test build #124455 has finished for PR 28909 at commit fa4729b.

• This patch fails some tests.
• This patch merges cleanly.
• This patch adds no public classes.

[SparkQA]

Test build #124457 has finished for PR 28909 at commit 22f2481.

• This patch fails some tests.
• This patch merges cleanly.
• This patch adds no public classes.

[SparkQA]

Test build #124458 has finished for PR 28909 at commit 1a6c3b0.

• This patch fails build dependency tests.
• This patch merges cleanly.
• This patch adds no public classes.

[SparkQA]

Test build #124459 has finished for PR 28909 at commit 1d7cfaf.

• This patch fails build dependency tests.
• This patch merges cleanly.
• This patch adds no public classes.

[SparkQA]

Test build #124462 has finished for PR 28909 at commit 5027b09.

• This patch fails build dependency tests.
• This patch merges cleanly.
• This patch adds no public classes.

[SparkQA]

Test build #124449 has finished for PR 28909 at commit ed00363.

• This patch passes all tests.
• This patch merges cleanly.
• This patch adds no public classes.

[HyukjinKwon]

The tests passed:

Spark package found in SPARK_HOME: C:\projects\spark\bin\..
== testthat results  ===========================================================
[ OK: 13 | SKIPPED: 0 | WARNINGS: 0 | FAILED: 0 ]
v |  OK F W S | Context
v |  11       | binary functions [23.7 s]
v |   4       | functions on binary files [6.2 s]
v |   2       | broadcast variables [2.2 s]
v |   5       | functions in client.R
v |  46       | test functions in sparkR.R [17.2 s]
v |   2       | include R packages [0.2 s]
v |   2       | JVM API [0.2 s]
v |  75       | MLlib classification algorithms, except for tree-based algorithms [127.3 s]
v |  70       | MLlib clustering algorithms [47.9 s]
v |   6       | MLlib frequent pattern mining [9.1 s]
v |   8       | MLlib recommendation algorithms [13.2 s]
v | 136       | MLlib regression algorithms, except for tree-based algorithms [311.6 s]
v |   8       | MLlib statistics algorithms [3.8 s]
v |  94       | MLlib tree-based algorithms [118.1 s]
v |  29       | parallelize() and collect() [0.4 s]
v | 428       | basic RDD functions [337.5 s]
v |  39       | SerDe functionality [12.3 s]
v |  20       | partitionBy, groupByKey, reduceByKey etc. [44.7 s]
v |   4       | functions in sparkR.R
v | 1153     5 | SparkSQL functions [468.2 s]
--------------------------------------------------------------------------------
test_sparkSQL.R:307: skip: create DataFrame from RDD
Reason: Hive is not build with SparkSQL, skipped
test_sparkSQL.R:1341: skip: test HiveContext
Reason: Hive is not build with SparkSQL, skipped
test_sparkSQL.R:2813: skip: read/write ORC files
Reason: Hive is not build with SparkSQL, skipped
test_sparkSQL.R:2834: skip: read/write ORC files - compression option
Reason: Hive is not build with SparkSQL, skipped
test_sparkSQL.R:3727: skip: enableHiveSupport on SparkSession
Reason: Hive is not build with SparkSQL, skipped
--------------------------------------------------------------------------------
v |  16       | SparkSQL Arrow optimization [571.4 s]
v |   6       | test show SparkDataFrame when eager execution is enabled. [2.6 s]
v |  42       | Structured Streaming [109.2 s]
v |  16       | tests RDD function take() [0.6 s]
v |  14       | the textFile() function [17.9 s]
v |  45       | functions in utils.R [2.3 s]
v |   1       | Windows-specific tests [0.2 s]
== Results =====================================================================
Duration: 2248.2 s
OK:       2282
Failed:   0
Warnings: 0
Skipped:  5
Build success

The last commit only added some comments

[HyukjinKwon]

cc @shivaram, @felixcheung and @dongjoon-hyun, I am going to merge this as it doesn't affect anything in other PR builders, and the tests passed in AppVeyor.

Now, SparkR tests on R 4.0.2 with Windows via AppVeyor, and on R 3.5.2 with Linux via Jenkins.

[HyukjinKwon]

Merged to master.

[SparkQA]

Test build #124460 has finished for PR 28909 at commit 741b7a5.

• This patch fails due to an unknown error code, -9.
• This patch merges cleanly.
• This patch adds no public classes.

[SparkQA]

Test build #124456 has finished for PR 28909 at commit 5b1929a.

• This patch fails due to an unknown error code, -9.
• This patch merges cleanly.
• This patch adds no public classes.