3.x: Update env names for release plugin v0.15

[akarnokd]

After merging #7246.

[codecov]

Codecov Report

Merging #7247 (cfe160a) into 3.x (24113ad) will increase coverage by 0.00%.
The diff coverage is n/a.

@@ Coverage Diff @@## 3.x #7247 +/- ## ========================================= Coverage 99.59% 99.59% Complexity 6759 6759 ========================================= Files 747 747 Lines 47391 47391 Branches 6382 6382 ========================================= + Hits 47197 47199 +2 + Misses 88 86 -2  Partials 106 106 

Impacted Files	Coverage Δ	Complexity Δ
...ternal/operators/completable/CompletableMerge.java	97.29% <0.00%> (-2.71%)	2.00% <0.00%> (ø%)
...nternal/operators/parallel/ParallelReduceFull.java	91.08% <0.00%> (-1.99%)	2.00% <0.00%> (ø%)
...ternal/operators/observable/ObservableFlatMap.java	97.51% <0.00%> (-1.07%)	3.00% <0.00%> (ø%)
...ernal/operators/flowable/FlowableFromIterable.java	98.95% <0.00%> (-1.05%)	5.00% <0.00%> (ø%)
.../operators/observable/ObservableCombineLatest.java	99.38% <0.00%> (-0.62%)	6.00% <0.00%> (ø%)
...a/io/reactivex/rxjava3/subjects/ReplaySubject.java	99.16% <0.00%> (ø)	49.00% <0.00%> (ø%)
...a3/internal/operators/flowable/FlowableCreate.java	99.35% <0.00%> (+0.32%)	6.00% <0.00%> (ø%)
...ernal/operators/flowable/FlowableFlatMapMaybe.java	98.44% <0.00%> (+0.51%)	2.00% <0.00%> (ø%)
.../operators/observable/ObservableFlatMapSingle.java	97.61% <0.00%> (+0.79%)	2.00% <0.00%> (ø%)
...nternal/operators/observable/ObservableCreate.java	99.14% <0.00%> (+0.85%)	2.00% <0.00%> (ø%)
... and 2 more

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