[apex] Use same ANLTR version for apex-parser

[adangel]

Is your feature request related to a problem? Please describe.
PMD uses a different ANTLR version than apex-parser:

• PMD uses ANTLR 4.9
• apex-parser uses ANTLR 4.8

We have already a workaround to just ignore this warning message and hope, that the two versions are still compatible:

pmd/pmd-apex/src/main/java/net/sourceforge/pmd/lang/apex/internal/AntlrVersionCheckSuppression.java

Lines 13 to 17 in 642716f

	/**
	* Suppresses the warnings about mismatched ANTLR runtime/compilation version.
	* <p>ApexParser is using ANTLR 4.8, but PMD is using ANTLR 4.9.</p>
	*/
	public final class AntlrVersionCheckSuppression {

Describe the solution you'd like

• Update Summit AST and apex-parser, remove this AntlrVersionCheckSuppression

Describe alternatives you've considered

• Update apex-parser to use the same ANTLR version
• Just reuse the antlr grammar from apex-parser and generate the parser in PMD (but we don't use the grammar directly, we use it through Summit AST)
• Use apex-dev-tools with updated ANTLR

Additional context
Originated from TODO:

pmd/pmd-apex/src/test/java/net/sourceforge/pmd/lang/apex/multifile/ApexMultifileAnalysisTest.java

Lines 67 to 69 in 642716f

	// TODO: log is not empty due to ANTLR versions, 4.9.1 vs 4.8, expect to resolve with apex-dev-tools switch
	log = log.replace("ANTLR Tool version 4.8 used for code generation does not match the current runtime version 4.9.1", "");
	log = log.replace("ANTLR Runtime version 4.8 used for parser compilation does not match the current runtime version 4.9.1", "");